Yes, I think this is a nearly perfect Android phone, and will be completely happy when the GPS fix rolls out (so long as it actually is a fix). The JIT compiling used in Froyo not only speeds up the phone (which the Captivate is already perhaps best out there until the rumored dual cores come out, and maybe even then as dual cores depend upon implementation just like our GPS chip), but did improve my N1's battery life. This should more than take care of any "lagginess" experienced- although I have to say I have been fortunate I guess and have not noticed any.
Part of me wasn't too worried about it at launch (and still am not now), but I do SOMETIMES wish the camera had a flash. I know they usually just ruin most pics and generally the "night mode" is better, but there have been times when the environment has been too dark for the night mode and even though a flash would have bleached out the picture, at least I would have gotten a picture...
I have had "smartphones" for the last four or five years, and I have to say the Captivate has most impressed me thus far, and once the fix comes out, it is hard for me to see how anything will top it in the next year or so (unless we don't get Gingerbread)...