I've said it before, but I'm a big fan of Deepspar. We have now bought 3 of these devices.
It does pretty much everything DE can do, well at least the features I use.
Plus:
1. Easy to read live graphical representation on whats happening to each block of sectors.
2. Live commentry on MBR,FAT,NTFS etc found.
3. Live count of file headers found as it goes along (i.e. number of Office docs, pics etc found)
4. Read "unreadable" sectrors with no ECC, using oversampling to get "best guess" at what each byte should be.
And it leaves the PC3000 machine free for other work.
The only thing it can't do AFAIK is image Seagate and Samsung by heads (apparently the Samsung bit will be in the next s/w release, but not Seagate as it does not have the serial interface required to do it).
Mine are in use 24/7 and have paid for themselves many many times over

Hot swap facility is supported (i.e. sleep donor HDA and replace with patient)
However, loaders etc required in some cases are not supported obviously, and that's where DE comes in useful, as well as the pre-mentioned ST head maps.
So in summary, Deepspar is my preferred imager, but any decent DR company should have it as well as DE as part of their arsenal. There have been some cases which would not have been possible with one device, and vice-versa.
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