There is no way, in a side-by-side comparison, anyone could equate the Topre to a lesser membrane board IMO. The Realforce is just too solid (that's about the best way to put it--ripster is right), responsive, consistant, and functional...
Everything about it so far is great--the key feel is top notch to me (I like the textured finish and think it's going to be durable, unlike the Filco, ABS, and DAS that started to show some shine after a couple of days). The sound is good, although I definitely like a little more chatter. And the NKRO is the best I've tested with a keyboard connected to a USB port; every key combination just works. The thing even looks cool.
With all that said, unfortunately, I don't think I can make the 87u my daily driver. After two days of benchmarking and editing images in PS, I've realized how much I use a numeric keypad. Sigh. If Topre comes out with a 104-key version though, I'm going to be all over it.