Hi Gerard.
I'm a StrataFrame user, and all I can say is that it has helped me a lot. The framework grows in a regular basis, the support is the best I've seen. It looks nice, there are many very productive tools. I've been re-writting a VFP application we seel in Brazil using SF, and it's been great fun.
Feel confortable if you would like to ask any thing more specific.
Cheers.
Ivan