comparing Astros and Ventures

Can someone give me an overview of these models (including safaris). Size of engine, mpg's, benefits to either. I need something preferably 2000+, but may go as far back as 1998.

I lean towards a cargo Astro (who needs all that glass), but can't otherwise say why a Venture won't do as well.

Any benefits to working on one over the other? Cost of parts? Availability, etc?

Does the GM version of the Astro differ from Chebby? What about Pontiac/Olds minivans, whatever were available? They any good?

I must say having owned an older chebby van years ago I totally prefer shocks to any type of strut. Do astros use struts at all?