I've been going through the same
I've kinda narrowed my selection to:
Vista C - if i can find one used for a descent price
Vista CX - i really don't need the extra memory but if i can't find a C i will settle for the CX
or
60csx - i know this is the top but if i can get tigers gps to beat the price from gpsonline i'll go on and fork out the extra money
i figure all of the above have what i'm looking for
color display
electric compass
computer connectivity
the vista cx and 60 csx both have expandable if i do need it later
i know the 60 csx is expensive but if the difference is less that $100 then i'd rather pay that and know if i ever needed to get rid of it then i could get the best resale value on it because its the one to aim for
right now i'm looking more for a vista C and if i can find it for around $150 then that will the most bang for my buck
hope this helps