the wacoms and cintiqs are totally different beasts. Drawing on one surface and looking at another is not natural at all. At least not for me, I could never do it and so I always hated tablets.
A cheap Wacom is better than everything else on the market.
i bought the 10x6" monoprice tablet. it's really really bad. just terrible. between the lag, studdering and shoddy workmanship, you're better off buying a bamboo or even a used wacom.