Having had the dubious distinction of having had a Model 950 power pack get thoroughly "cooked" probably for the reasons mentioned by Sluggo above, I am very leery of companies offering surge protection/line conditioning units with go-zillion dollar equipment replacement guarantees.
To make a long story short and keep it to 2 cents worth, a company that might be worth taking a look at www.pricewheeler.com
They offer "medical grade" fault-tolerant protection/conditioning at reasonable cost.

If nothing else, they give a good presentation on how it all works plus their home page has a catchy headline:

"If P.T Barnham were alive today he'd be selling surge protection". UL-Technician


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