Like any product purchased, virtual or hardware, one either likes it or dislikes it, that is human nature. I think a lot of folks anticipate great wonders and are let down by the fact that it still looks like a sim. Well, compare it to FS2004. A lot of folks are let down by the performance, us grade then please.
The key to a good FSX flight is to (1) plan the flight before hand, (2) defrag, shut down and restart. Open FSX, choose flight, aircraft, weather, time, season, etc. Then fly, like you would in the real world, don't pause, slew, switch views too often, just use the VC and fly. The only time my frame rate went below 30 last night was landing at Moss Field right at sunset. I find the clarity amazing, the auto-gen matching stunningly, the little bumps and rolls of the terrain that one does not normally see pop out, rivers have banks, fields look like fields, rocks look like rocks! In short gentlemen, sometimes one purchases a Trumpeter Chinese wannabe, but in the case of Orbx's FTX-PNW, you're getting a top-of-the-line Tamiya!
Caz