Problems Deciding

I've been waiting for 3 months to buy a big plasma HDTV. One that will make the movie theaters look small. The time finally came and the money is in the bank, but now I can't make a decision. Do I buy it from Amazon or Buy.com and pay shipping and have to wait 3 - 5 days, or do I go to Sam's or BJ's and pick one up today,for a little bit more and pay $150 sales tax??

Yes, I know, there are people starving in Africa and I'm crying about what plasma TV to buy, but there's a real problem here. I never can make a decision - especially when it comes to buying electronics. I'm always wondering if there's a better deal that I'm missing. I guess I should chalk it up to my being so frugal (or 'cheap' as my wife would say), but it makes life hard. Every day, I wonder -where should I go to lunch? Should I splurge and go to Schlotzsky's, or just save a few bucks and go to Taco Bell. My personal decision making skills just suck. I go to a drive-thru with my family and I panic. I can't decide and there are people behind me---what am I going to do????

I'm sure there's help for people like me out there somewhere, but in the mean time - does anyone know where I can find a good deal on a 50" plasma HDTV???