That Electribe sampler seems nice. Could be handy for simple live stuff.
Recently dug up my old Yamaha A3000 v2. Installed a 128 MB working memory back in the day (~15 years ago), still works fine. Installed also 9 GB hard disk back then (officially supports only 8 GB but worked fine somehow), but after years and years of non-use the hard disk seems to have quite working. However, with external SCSI-drive it's still okay. Of course, saving samples is not even mandatory for studio use. Just sample good stuff, play and record on the fly, and get over it.
It's a really powerful sampler, with very nice filters, very good adjustable midi controls, and a fast and intuitive interface (once one gets into it). Can be used also as a good external effects machine. If you need a sampler, got space in your studio and can find one for a nice price, I'd say for for it. Never tried those A4000 and A5000 but I guess they're nice as well.