If you're just looking for a VN tablet, then yea, a Dell Venue Pro would be good. I wouldn't even care if it's brand new or not as long as the specs are decent and the price is a steal. Screen has to be scratch free of course and still running good.
Here's a 64GB dell venue pro refurbished one. It's 159 with free shipping (US only)
http://www.ebay.com/itm/like/261685566585?lpid=82
As for Micro SDs, I'd recommend getting a write speed of 48+. The samsung evo 48+ and 90+ are very fast cards. For awhile the samsung 64gb 48 w/speed was selling at $24.