Cisco Wireless :: Difference Between WAP321 And AP541N?

I was looking for some clarification on the capabilities of these devices to allow roaming of clients between AP's.  Take a basic scenario of 3 AP's and a single SSID.  I know the AP541N has clustering which uses the Fast Client Roaming Protocol, which basically does a quick re-connect to the new AP.  Not quite as seamless as using aironet and a controller, but still pretty good. 
 
Question 1 How does the WAP321 handle roaming?  Obviously without the clustering feature you would have to configure each AP independently.  But after setting them up, would it support roaming in a similiar way to the AP541N??
 
Question 2 Would running three standalone Aironet 1141's operate any differently in terms of roaming?
  
In summary I like the roaming capability of the AP541N but hate the large clunky form factor.  I need something that can be mounted in an office environment (ceilings) that will handle easy client roaming.  A short disconnect isn't a concern as long as it reconnects on it's own.   Wireless controllers are a little out of the price range for this setup.