Bob check out the Ipad air 2. It has 2 gigs of ram memory and the latest (faster) cpu. Also go over to the
http://forum.audiob.us/ forum site. There's a lot of good info on apps and ipad hardware comments.
I'd go to the ipad air 2 and as much memory as you want to afford because you're going to live with this for awhile.
Hope this helps Wyndham