Network Setup Help

I am not a huge tech person as far as making everything work seamless and to it's fullest potential

I currently have an old Linksys BEFCMU10 cable modem paired with a Linksys WRT54GS (G) router.

I am anticipating buying the new iPad in a few days and I'm trying to get my network up to speed before I add the extra load. Currently I run a Roku most of the time for all content and a laptop for my internet access with the occasional smartphone mixed in. I am assuming the iPad will be N compatable and my current laptop is. I just never wanted to invest in the money because G was more than fast enough for my laptop. My stuff is so old I don't know if the router can handle the extra strain. I ran some tests this morning and this is what I got:


Up down

2.76Mbps 10.06Mbps

2.78Mbps 9.37Mbps

2.85 16.11

2.81 12.11

AVG: UP =2.8 Down=11.91Mbps

Plugged in

Up down

2.84 26.43

2.83 26.79

2.84 27.34

2.84 26.08

Avg: UP=2.83 Down=26.66Mbps

So the question is this. I'm debating between the linksys E2500 dual band and the E3200. I can't seem to be able to tell the difference. I'd love to save the money but since I plan to keep it till it fries I'm fine with spending the extra money. Is it worth it to go with the 3200? To me they both say I'm not certain what the difference actually is. Also do I need to upgrade the modem as well?