OT: SATA Backplanes drivebays and caddies

[Bob <spam@homeurl.co.uk>]

Sorry for the OT post but I know a few round here are well informed on 
the storage industry.

I'm just about to migrate a bunch of PCs to SATA from IDE as the IDE 
drive caddies are failing [0] and I already have my server and a few PCs 
using SATA, what I'm looking for is a drivebay / backplane manufacturer 
that has 5, 4, 3 and 1 slot internal bays available that use the *same* 
tray / housing / caddie.

The tray / housing / caddie doesn't have to be rugged [1] or cover the 
whole drive, it would just be *really* convenient to be able to move 
drives around at will.

My search (below) hasn't helped much, has anyone round here got and 
suggestions?
sata "removable (disk | drive | harddrive) (caddy | bay | drawer | 
tray)"  single multi

Thanks

[0] I think all ATA removable bays take a bunch of liberties with the 
standard anyway and these were cheap and are old
[1] which I suppose by definition means it's not a caddie