Any high quality THIN KERFED carbide tipped blade. There are lots of good brands. Forrest "Woodworker" is tops, but expensive.
http://www.forrestblades.com/
Freud makes good blades at a moderate price,
http://woodworker.com/cgi-bin/FULLPRES. ... UM=118-244
So does Makita and Dewalt. The best bang for your buck is Marathon blades by Irwin. Not top of the line but good enough for flooring and last a long time. A 10" blade with 40 teeth is less than $30.00.
http://www.toolmarts.com/irwin_blades.html
The more teeth, the finer the cut but the blades will cost more and cutting will be slower.
This blade here would probably do you just fine without breaking the bank.
http://www.amazon.com/exec/obidos/tg/de ... i&n=552320