Need help choosing a laptop $850 budget

There are the ones Im looking at now

Acer AS7741g
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


MSI FX600
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Or waiting 2 weeks for the

Acer 4820tg
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Now last night when I was looking I was sold on the MSI but after much researching I see Acer doesnt have the bad rap like it did when I bought my last notebook. Is the 3Geforce GT 20M in the MSI very weak compared to the 5650 radeon HD. Also, is there a big difference between the i5 450ma nd the i5 460m. Thanks

I use the notebook mainly for research purposes, collecting articles, internet and light gaming. RTS's mainly and I would love to dabble in some Starcraft 2 or Civ 2 in the future if possible. I normally don't care about batterly life but the 4820tg is pretty tempting knowing I could carry it to class and things like that (i'm a grad student), but I watch lots of shows on my notebook so I'm kinda scared of the screen size. I also read some bad things about acers microphone and webcam quality. I skype my family quite a bit but I can work around that for the specs the acer has.

If anyone else has any suggestions, then freel free to post them for me. I'd really appreciate it.