As California noted, I don't think you'll see any speed issues. If you do download/upload a lot of data maybe; then it may be worth checking the FAP (fair user policy: limits X amount of data over Y time period, with Z throttling results) different for each provider, but likely the data cap will rise some as well as the transfer speed in the premium plans.
One thing I'm sure you notice though, satellite latency is a bit annoying:
The DSL-like speeds are there, but that second or two delay when you open a new page makes you wonder for a bit.
Also, a real heavy rain storm can take you out for a bit; the right accumulation of snow will too (I can be on-line during a blizzard, but have to crawl on the roof and dust off the satellite every so often; or just wait till it blows itself off
). Another oddity, that I know exist with other WB users as well, but no idea on the others: about once a month it will freeze until you power down the box and bring it back up.