I (and other members at
blu-ray.com) have plenty of experience with these things.
If you are looking for a BR player with built-in Wi-Fi, they can generally be found at around the $129 price point (maybe even lower if there's a sale).
My experience is mainly with Sony products. Most of the major brands (Sony, Panasonic, LG, Samsung) are known to be solid products, while store brands (such as
Best Buy's "Insignia") are manufactured by Funai (as is many of the $50 Magnavox players at
Walmart).
Also, I know OP wants a Wi-Fi enabled player, but did you know that you can access the apps, etc. by plugging a $5.00 Cat 5 network cable directly into your internet router? And for AT&T U-verse customers, you can buy a $3.00 patch cable and connect your BR player to the U-verse box...