Talisinbear wrote:
So the question is, without spending a fortune on rares and promos, what singles are good choices to grab as we start into the game?
Well, if you can get a cheap case of either set, go ahead and do that. That'll should be all you ever need to buy from that set, and will provide plenty of variety to your games.
If you can only find singles, here's my recommendations:
Needed: Hansa, Viskunmateus. These are probably the strongest pieces in each set; I would probably increase their costs by a point or two if I were King of the World. They are also interesting to play: Hansa's bouncing off walls can drive chess players bonkers, and Viskunmateus can switch between a chess knight and a short rook almost at will.
Good: Midrah, Kanimiso, Kapinahs, Nemchant, Chakrabat, Laynard, Nergalgamesh, Kairas. These are decent pieces, and open up some fun metagame space.
Everything else is pretty much a wash: there are some fun combos and tricks in there, but nothing stands out (IMHO). Pick up whatever you can find cheap

.
(Oh, and don't worry about rares and promos. They are exactly the same as the "commons", just with different coloring schemes. The only reason to worry about them is if you are playing in official tournaments: you can only have two copies of one piece if one of the copies is a rare. For home games, just play with two common pieces and call it good.)