Big and hard and if possible but not a must, protection.
Trades or singles: hardcovers are too expensive for me.
Pull List; seems to be too long to fit in my sig...
Hardcovers-Marvel's been kicking ass with them for years, and I tend to lend my books out to ppl, so something a little toughter is nice.
I still buy more singles than anything else though, and some books are only avail in trade, so there's that.
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