Green screen vs backdrop

[Sherman]

Client requires grey (not dark) background.
Is a grey coloured backdrop the best option or can grey BG be successfully achieved by shooting against green screen and replacing grey with chroma key feature?
I've been experimenting with some old green screen shots, dropping in grey.
Am I right to think this is a bit iffy?
Is it my technique that needs some honing or does Vegas have limitations here?
Peabody

 

[David Jimerson]

I'd just go with grey if you can. Fewer hassles. Doesn't need to be lit perfectly; no key required; no green glare on everything.

 

[Sherman]

Agreed.
Chroma keying can be more than a bit of a pain.
Thanks David.