I don't know what is considered "cheap" but I have this 32 GB class 10 PNY card which I got for $38 at Amazon. It works great shooting HD video with no lag.
I've noticed 1080p video is a bit choppy, but that may be due to my older card. Maybe it's time to upgrade (it's the card that came in my OG Droid; I might cry if I have to ditch it).
"Saving DROID Razr's, one battery at a time. :-)" - (credit SallyC)
Avatar is Maxwell Smart, AKA Agent 86, from "Get Smart" (with his signature "Shoe Phone"), a SitCom TV series by Mel Brooks & Buck Henry, based on the spy thriller series, "The Man From U.N.C.L.E.".
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