If you use the compass a lot, then I'd say wait for the 60cs. Personally, I had (still have actually) a Vista and while I used the compass at first, I found it annoying that I had to calibrate it every time I changed batteries and before long, I stopped calibrating it and stopped using it.
Needless to say, I ordered a 60c, and haven't missed the magnetic compass. But YMMV.