I recently switched providers for shared hosting used to host this site and a couple of others, and the improvement, at least in transfer rate, has been pretty noticeable.  I just happened to come across my site’s crawl statistics in Google Webmaster Tools today and the improvement speaks for itself:

Time spent downloading a page (in milliseconds)

I made the switch in the first week of April. I knew the site was running faster, but even this graph surprised me.