Apple Logic Pro /LogicExpress Discussion

As a relative newbie to Logic 9 I wondered if 
anyone could give me some advice about setting 
up reverb busses. 

Do most use Space Designer and if so what are 
your preferred settings for vocals and acoustic 
instruments? I mainly record acoustic guitar, 
mandolin, banjo and vocals (via a pair of 414s) 
as well as some electric guitar, bass and 
keyboards.

I'm trying to set up a few different templates 
but finding it hard to sort out the myriad of 
reverb settings available.

Any suggestions would be greatly appreciated.

very best
Paul