GTX260 vs 8800GT SLI

So, should you get one dual-slot card, or two smaller single slot cards? Which performs best? These benchmarks were performed using the 177.92 beta driver and GPU PhysX was enabled (don't think that matters here). The HardwareOC BenchTools benchmark was used for Crysis (1680x1050, very high w/ tweaks), and 3dMark06 was run at default settings.

Crysis

3dMark06

Test Setup: E8400 @ 3.00GHz, 4GB 5-5-5-18 DDR2 800, 780i sli, Windows XP 32bit SP3