I've played ~9k hands at 10nl and I have found it to be very beatable. What I found is that overpairs are not always good. If a person is like 40/2 or something you're probably good, but against a 9/4 nit on a dry board facing a reraise you're usually not good. Also min check reraises on the flop are certain death and preflop reraises are also death. The games are noticeably easier if you play when the Euro players are on. These people are donkies and will draw to anything and your TPTK is almost always good against these people. Just value bet the hell out of them.