battery for rustler?

[rcsammy]

i now have most of the bits for my brushless rustler, i just need a battery and charger
i was going to get THIS from maxamps but have been told i can get a better quality pack for the money

so any suggestions on what would be better? i deffinatly want 3S and would like either a similar pack(would prefer having one larger pack) to the one above or two smaller capacity packs that will last around 30 mins each( i will be running a MM and VXL motor)

thanks, sam