Regardless of any difference in technical merit, start-ups using the MS platform are rare, while start-ups using any of the FOSS options are common. It will be hard to find people who are both experienced in the MS toolchain and desire to work in a high risk venture, let alone people with prior start-up experience.
If you do go the MS route, your best bet will be to find bright folks that are good at what they do but bored or undervalued at a more stable business. They're likely to be young and inexperienced, since age brings commitments that bias people towards professional stability.
Regardless of any difference in technical merit, start-ups using the MS platform are rare, while start-ups using any of the FOSS options are common. It will be hard to find people who are both experienced in the MS toolchain and desire to work in a high risk venture, let alone people with prior start-up experience.
If you do go the MS route, your best bet will be to find bright folks that are good at what they do but bored or undervalued at a more stable business. They're likely to be young and inexperienced, since age brings commitments that bias people towards professional stability.