Well size was the main reason I mentioned the alternatives.
But also, the express editions are lacking features from visual studio. Sharp develop is more comparable to visual studio than the express editions..multi language support and an add in architecture spring to mind.
( As a little a side note, Sharp develop also has support for boo, which is a language you should all check out.
http://boo.codehaus.org/Think the best of python and c# combined. When they finally get full generic support for boo, I see myself using it over c# to write games. Its really cool. )
Don't get me wrong though. I don't think sharp develop is anywhere near as nice as the ms ide's. Cuz its not :)