If you upgrade your plan then of course you should be able to get better speeds but, remember there's limits depending upon whether the people you're downlding from are using dial up or how much spare bandwidth they have available spread b/w a no. of people. Some people offer great upld speeds by not having too many upld slots, but some have it set to unlimited slots so if they're busy it might mean their upld speed drops after it's been divided amongst many people.