Yeah, X2 is a great card, but the rest of my rig is silent and the X2 stood out like a sore thumb, and with no 3rd party coolers anywhere near I have decided to go back to a GTS and wait it out til Jun/July when the GT200/RV770 appear and i'll grab one of those.
As for why i've had so many 8800's:
1st - 8800GTS 640MB - Bought on release because the GTX was so massivly expensive and at the time the GTS easily cut through everything.
2nd - 8800GTX 768MB - Bought 2nd hand for a great price at the time and served me well
3rd - 8800GTX 768MB - 8800GTS came out, prices started to dive on the GTX's, so I sold my previous GTX for a good price, then waited a week and bought annother for far cheaper = profit
4th - 8800GTS 512MB - Had sold my GTX in preparation of getting a 3870X2, but after initial reviews came in saying it was loud and the first benchies didn't look all that good I grabbed a cheap 8800GTS instead with the intention of skipping the X2 all together, however new drivers came out, the card picked up considerably, so I thought i'd take a risk on it knowing that the rest of my rig was damn quiet... the X2 was great, performance wise no fault, but the cooler design imho really let the card down, if only they had fitted a quieter fan and used heatpiped sinks instead of just blocks, so I sold it on without any real plan of what I wanted next.
5th - 8800GTS 512MB - Just ordered this, should arive tommorow, I plan on clocking the nuts off it and waiting to see what the propper next gen bring.
TBH looking back, if I had known then what I know now I would have just stuck with my first GTX.
But meh, you live and learn, and I wouldn't have had the fun of trying out all these new cards