Although I lied and said I have a 64-bit system...I don't right now, but I'm upgrading my box in the next coupla months (when the IRS refund arrives)...
Always thought I'd like SuSE (until it ended up with Novell, who completely hosed my sentimental favorite, WordPerfect, before they realized they didn't have the chops to maintain it).
(K)ubuntu were right up there; they said it failed due to the lack of a graphical installer. (Now before all you Linux fundies jump down my throat, I must tell you that I am the second worst typist in the world, and typing long lines of unintelligible gibberish in response to a command prompt is not my idea of a good time, nor is it likely to result in an error free install. YMMV.)