On the surface it seems like a no brainer. Development tools, operating systems and Azure hosting for 3 years. But are there any gotchas? And what happens at the end of the 3 years? Is it easy enough to opt out of gracefully? All going to plan, with the help of BizSpark I'll be raking it in with all the new goodies I've developed, but I need to cater for the scenario that this doesn't exactly pan out.
Also, how useful is the Azure hosting? I'm about to delve into the trial now to try and find out for myself, but any feedback there would also be appreciated.