Yep, I have a pair of the Marshall mxl603s and am very happy with them. Also a 4033 with which I've learned alot. Yes, I will save up and get better mics as well, but I believe these mics will continue to get used even after I get better stuff.
I'd say the Marshalls in particular sound much better than their price would suggest. See Harvey G.'s comments on these elsewhere in the forum.
I'm no golden ears, but have been lucky enough to work with a variety of mics over the years, and you don't have to drop 1 Grand to get something you can work with. Heck, you don't even *have* to get a condensor if you're in the lower price range. There's some pretty darn good sounding dynamics in the 200-300 dollar range. Definitely better than some of the "large diapragm" condensors in that range.
But I would recommend checking out the Marshalls if you can.
Jon