you can try viewing some SBS(side by side) 3D videos if you just want to get an idea of the 3D performance. it's not technically as good as a 'full' 3D bluray, but it works, and you should be able to find examples of it on youtube even.
I wouldn't bother with leaving the settings at 50. no point in doing that, and no way it looks as good as it should. plug in one of the calibrations from the calibration thread, or do your own basic one with a test disc and use that for awhile.
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1130K, 7.1/5.1.2 audio
Sources: HTPC(Enby), PS3, XBOX360, Wii
Control: Harmony One