Leviton Hospital Grade AC Outlet - Which One?


I've decided to go ahead and buy a Powervar ABC1200-11 power conditioner. It's my understanding that even though these units were made for medical usage, they have two versions of this model - one with regular receptacles, and one with hospital grade receptacles indicated by a small green led on each receptacle).

I'm thinking about going to DIY route and upgrading the AC receptacles to medical grade ones (and possible putting in an IEC adapter to roll my own power cable). Ebay seems to be the cheapest place to get the AC receptacles, but there are two different hospital grade Leviton outlets that suit the bill. I'm hoping to get folks' opinions as to which one I should go with.

1. self-grounded outlet

2. isolated ground outlet

The only difference is that the more expensive one has an "Isolated ground devices have a grounding terminal that is electronically isolated from the strap to eliminate electrical interference (noise) in grounding networks that can cause problems in modern electronics", while the cheaper one is "self-grounded".

What are people's thoughts on this? Thanks!
maha0098
neither, both sound like crap. Try a pass & seymour 8200 MRI or 5242 (if you can find one) if you don't want to spend too much.

these guys have both it seems...
http://www.electricsupplyonline.com/prod/pass_and_seymour-outlets.php
The first outlet I tried was a Leviton from Home Depot, replacing the original outlet in my apartment (circa 1970). It was a step forward over what was there (as you may expect); but I changed it for a Pass and Seymour 5242-I a couple of months later. Once that had some weeks on it, the overall sound was much improved. The P&S do take some time to come on song.

Regards,
Post removed 
One more voice says avoid the Leviton, the P&S and Hubble outlets sound much better.