Our tv is toast and we need another. Don't want to spend very much and pretty much will have to get it from BestBuy since with the card we get a little extra time to pay it off with no interest. Sooo.... I'm looking at these two tv's

http://www.bestbuy.com/site/Dynex%26%23153%3B+-+37%22+Class+/+720p+/+60Hz+/+LCD+HDTV/1009981.p?id=1218208403795&skuId=1009981

http://www.bestbuy.com/site/Dynex%26%23153%3B+-+37%22+Class+/+1080p+/+60Hz+/+LCD+HDTV/9573785.p?id=1218127623690&skuId=9573785

What's the difference between the 720p and 1080p if they are both HDTVs?