I own and live in a two family home. There is currently one heating system for the whole house, steam heat with a gas boiler. The boiler is on its last leg and since we have to replace it anyways I'd like to split out the heating system so there is one system for each apartment. We've contacted several local heating contractors about getting quotes and haven't had much luck. Maybe we're talking to the wrong people but we've only received one quote and its for forced hot air systems.

So I have a few question about this:

What do you think about forced hot air systems?
Would just splitting up the current system to two boilers be a viable option?
Are there any good resources for finding local contractors? I've tried Angie's list but most of the reviews on there are for contractors that have done simple fixes not system installation.

Thanks in advance for your opinions and advice.