So far it seems that MSVC 2008 compiler can compile about 2 or 3 times faster our medium complexity (Qt based) project in QtCreator. Probably because MSVC 2008 is pretty good in compiling simultaneously the multiple projects (we have 3 sub-projects, or as QtCreator refers to them “subdirs”).
Anyway it’s great. We have to recompile the whole thing from time to time. With MinGW it took about 8-10 minutes approximately, and with MSVC 2008 it’s done in 3-4 minutes maximum.
Also the compiled exe seems to be faster. So win-win :)