Lunarpages is good for small sites (probably even normal sized sites), i used to be hosted with them (i stopped hosting with them because i dont have the time to run and maintain a popular site anymore :( )  for the downloads part of my old site, when you have hundreds to thousands of site visitors visiting your site at the same time lunarpages tends to crap out royally..... they are overselling their servers, i have been woken up a few times by a lunarpages tech person on the phone (usually someone who can barely speak english) because of high server usage, because i had a semi popular site....

Most webhosts offer high storage and bandwidth, at low, low prices... these are companys who are overselling their servers, i.e: they are hoping you and others on the same server wont be using the max of what their hosting packages offer ! If you are intending to have a "popular" site then you have to take into account CPU and memory usage as well, which is something most webhosts dont mention (and tend to limit badly because their servers are oversold !!!

With my old site i had to get a second webhost who didnt oversell his server so i could shunt the heavily visited parts of my old site to it.... a quality webhost costs more, but the server will cope with high server usage....

The cheap webhosts like just about everyone mentioned in this thread are good for small sites, or sites that are just starting out.... but if the site grows in popularity be prepared for a lot of expense in having to find a decent host which doesnt oversell their servers, or maybe eventually have to get a dedicated server !