Yeah, the basic Topps set is a "never go wrong" kind of set. One of the fun ones, due to the insert autos, memorabilia, and having random people and inserts in the packs, is the Allen & Ginter set.
This one looks cheap right now, but has 36 packs of 7 cards each with some numbered cards and is based on the phone app cards.
http://www.blowoutcards.com/index.ph...ducts_id=11988
Here is the Topps base set (cards 352-701):
http://www.blowoutcards.com/index.ph...ducts_id=12155
Those would be my recommendations.