If you honestly don't feel the urge to throw all of your 1/60's in the garbage after owning and handling a 1/48, then I truly envy you. You will save yourself a lot of money by not buying all of the other 1/48's. I liked my 1/60's for a short while after purchasing my first 1/48, but then I began to like them less and less and, eventually, sold them all off.
There are only two areas in which I think the 1/60 beats the 1/48:
1. In battroid, the 1/48's chest seems a bit too wide, whereas the 1/60 seems just about right
2. The 1/60 line has two seaters and 1/48 does not