Networks Do I really need to buy expensive networking gear?

I was in some retail stores earlier today looking for a new modem router because I just upgraded my internet plan. Of course the sales staff try and urge you to spend more and claim it has greater features and what not.

When I got home I decided I would look online and I came across the TP-Link 300M 802.11n/g/b Ultimate Wireless-N Gigabit Router with 3 Detachable Antennas [TL-WR1043ND] for about $80 (Australian Dollars). But then for about another $60 I could get a Belkin N1 MiMO ADSL/Cable Router.

I've used TP-Link products in the past before and they worked fine for me, I'm just wondering if there is something I'm missing apart from the brand name effecting the pricing?

Thanks!
phant0m