Have decided to build a 1975 (year I was born) Topps set. Got my first lot in today. Got a lot of just over 400 different with stars in Ex-Mt to NM condition for $65.
Upon looking at a few (I'm at work, so can't go through and check them all out until I get home), centering on the back seems to be the biggest problem. But I'm happy so far.
Will be looking to buy 2-3 more lots of around 200-300 each and then build the set and put them into pages and a notebook, both of which I still have to buy. Will sell/trade any extras and maybe do a 1974 Topps set next. Here's the start though to my 1975 Topps set: