Oppo's newest models are the BDP-93 and the BDP-95. The officially discontinued BDP-83 and BDP-80 are also excellent players and are still viable choices through the Amazon marketplace or eBay. Choosing the right player for you depends on your needs and what you want to spend.
Below you will find links to various resources for these players, including sites where region mods can be purchased.
It should be noted that the mods make these players region free for both Blu-ray and DVD playback, and the BDP-93, BDP-95 and BDP-83 in particular do an amazing job on DVD upconversion.
For region maps and country listings covering both Blu-ray and DVD, you can click here.
OPPO BDP-93 RESOURCES

click images for high-res versions
¤ Main listing and specs
¤ Firmware and instruction manual updates
¤ Additional images
PRO & USER REVIEWS
¤ Audioholics.com - A full review by Clint DeBoer
¤ Prillaman.net - Full review by AVSForum.com user gonk. Link is to his personal website, with pictures and screen caps.
¤ (Secrets) HomeTheaterHifi.com - An audio performance review by John E. Johnson, Jr.
¤ About.com - A full review by Robert Silva
¤ Amazon.com - User reviews. Link leads to all reviews, sorted by their "most helpful" ranking.
REGION MODDING
¤ Bluraychip.dk has a solder-free mod-kit for $89. It makes the BDP-93 region-free for both Blu-ray and DVD. Price includes shipping and tax.
¤ JVBDigital.nl has a solder-free mod-kit for $109, with free shipping to the U.S. and the Netherlands. It makes the BDP-93 region-free for both Blu-ray and DVD.
OTHER LINKS
¤ The Unofficial FAQ - A great and thorough FAQ on the BDP-93
¤ The Official Wiki FAQ - Oppo's Wiki FAQ on the BDP-93
¤ AVSForum.com thread dedicated to the BDP-93
¤ Blu-ray.com thread dedicated to the BDP-93
¤ Blu-ray.com summary page for the BDP-93
PURCHASE OPTIONS
¤ Directly from Oppo for $499 + shipping.
¤ From Amazon.com for $499 with free shipping inside the U.S.A.
¤ From Solutions AV for CAD $520. They are a Canadian authorized re-seller located in Toronto and they allow for free local pickup.
OPPO BDP-83 RESOURCES

click images for high-res versions
¤ Main listing and specs
¤ Comparison chart: BDP-83 vs. BDP-80
¤ Firmware and instruction manual updates
PRO & USER REVIEWS
¤ (Secrets) HomeTheaterHifi.com - Full review by Adrian Wittenberg
¤ Audioholics.com - Full review by Clint DeBoer
¤ About.com - Full review by Robert Silva.
¤ Prillaman.net - Full review by AVSForum.com user gonk. Link is to his personal website, with pictures and screen caps.
¤ Amazon.com - User reviews. Link leads to all reviews, sorted by their "most helpful" ranking.
REGION MODDING
¤ Bluraychip.dk has a solder-free mod-kit for $79. It makes the BDP-83 region-free for both Blu-ray and DVD. Price includes shipping and tax.
¤ Installation instructions for the Bluraychip.dk mod.
¤ JVBDigital.nl has a solder-free mod-kit for $89 + shipping. It makes the BDP-83 region-free for both Blu-ray and DVD. They don't have installation instructions posted online.
¤ eBay can sometimes be a good source, at prices oftentimes less than the above websites.
¤ A firmware hack is also available, but if you go that route you can't keep up-to-date with Oppo's official firmware. Also, click here for another important tidbit.
¤ AVForums.com has a discussion thread on the above firmware hack and the Oppo BDP-83 in general
OTHER LINKS
¤ The Unofficial FAQ - A great and thorough FAQ on the BDP-83
¤ The Official Wiki FAQ - Oppo's Wiki FAQ on the BDP-83
¤ AVSForum.com thread comparing the BDP-83 to other Blu-ray players
¤ AVSForum.com thread dedicated to the BDP-83
¤ Blu-ray.com thread dedicated to the BDP-83
¤ Blu-ray.com summary page for the BDP-83
PURCHASE OPTIONS
¤ From Amazon.com marketplace sellers at different price points.
¤ eBay sellers often have both new, used and pre-modded players for sale
OPPO BDP-80 RESOURCES
click images for high-res versions
¤ Main listing and specs
¤ Comparison chart: BDP-80 vs. BDP-83
¤ Firmware and instruction manual updates
PRO & USER REVIEWS
¤ About.com - Full review by Robert Silva.
¤ Prillaman.net - Full review by AVSForum.com user gonk. Link is to his personal website, with pictures and screen caps.
¤ AVSForum.com - Mini review by AVSForum.com user winston9332. Posted in his testing and review thread over there.
¤ Amazon.com - User reviews. Link leads to all reviews, sorted by their "most helpful" ranking.
¤ Audioholics.com - A "First Look." Not so much a review as it's an overview of the player and its differences from BDP-83.
REGION MODDING
¤ JVBDigital.nl has a solder-free mod-kit for $89 + shipping. It makes the BDP-80 region-free for both Blu-ray and DVD. They don't have installation instructions posted online.
¤ eBay can sometimes be a good source, at prices oftentimes less than the above websites.
OTHER LINKS
¤ AVSForum.com thread dedicated to the BDP-80
¤ Blu-ray.com thread dedicated to the BDP-80
¤ Blu-ray.com summary page for the BDP-80
PURCHASE OPTIONS
¤ From Amazon.com marketplace sellers at different price points.
¤ eBay sellers often have both new, used and pre-modded players for sale