It depends on you. I absolutely LOVE the 1920x1200 display on my Dell Studio 17 laptop, and always find the barely over 720p resolution of my 13" MBP to be a bit limiting. Granted they have very different uses for me, but I love a big beautiful high resolution display. But others are perfectly fine with a 13" MBP, and don't really care about resolution. So, it's really a pretty subjective thing.
You are really the only one who can answer whether or not this is important to you. So I would go to an Apple Store if you have one nearby, and see if they have any high res units on display. Then you can play with that a little and compare it to what you see at Best Buy.
One tip I will give you, is NOT to buy any Best Buy Geek Squad service plan or extended warranty. I would recommend Apple's AppleCare, especially on a 17" MBP. Best Buy's plans are going to be worth more as emergency toilet paper than anything else. That's just a general rule, regardless of store. Only deal with manufacturer warranties, skip store performance contracts or whatever stupid euphemism they come up with to try and disguise the fact that you're paying them for nothing. Get them to give you a copy of the terms and conditions, and then read how basically it's at their whim whether they replace, repair, or tell you to get lost.
i have a gift card for best buy and plan in getting a new i7 macbook pro. best buy doesnot carry high res or anti glare upgrades. how important is the high res upgrade? i could order it from apple but then not be able to use gift card. what is going on with other laptop makers are they going to high res? is high res going to be the new standard like hdtv or is it like the antiglare choice?