I like Infortrend, but...
I like them because they offered a decent-spec RAID6 iSCSI enclosure years ago when I was first in the market for one. Dirt-cheap with 3.5" SATA drives, but the iSCSI controller is a bit slow.
I got another one with a U320 SCSI connector, and that beast flies! Excellent investment for D2D backups.
My problem is that spare parts take up to 2 weeks to arrive. I had the U320 controller die, and really struggled for backups (small shop, and a bit hard to justify keeping a spare).
I daresay by now the iSCSI controller speed will have been sorted, so if they can keep the parts chain topped up they're well worth a look. In fact, I got a SAS one for a different company, and it's a great box. It was only the parts situation that made me recommend an HP (DotHill) box for their live storage.