Next BLIde version will have a new project mode called 'Solutions' that will work much more close to the Visual Studio Solutions or Microsoft IDEs.
I would suggest you to take a look to BLIde too, just to make the final decision on wich IDE fits best with the way you code. You know, IDEs are like clothes, it doesn't matter if they are well done and pretty, they also have to make you feel comfortable... Both Project Studio and BLIde (IMHO) are great ides for Windows. There are also other good options such as the BlitzMax Comunity IDE or UltraEdit
I would suggest you to take a look to BLIde too, just to make the final decision on wich IDE fits best with the way you code. You know, IDEs are like clothes, it doesn't matter if they are well done and pretty, they also have to make you feel comfortable... Both Project Studio and BLIde (IMHO) are great ides for Windows. There are also other good options such as the BlitzMax Comunity IDE or UltraEdit