16GB SDHC cards: Patriot, A-Data and PNY all seem to be around $65 where as Kingston class 4 is $85 and Sandisk closer to $100.
OR you can get 8GB Sandisk class 6 cards for under $40 now... which brings up another question: for 2 hours of recording, is it better to use 2-8GB cards or 1-16GB? Certainly 1 card is more convenient, but is it a bad idea to trust your entire vacation on 1 SD card?