I'll answer some of your questions nick that you posted elsewhere, as well as here, and give you my take on Richard Gray.
If one of your goals is to protect your HT from surges, then there is no better way than to implement a whole house approach. The reasoning for this was outlined in the thread you first posted in. After doing that, you can use modest plug in devices. There is no company in the world that would rely solely upon plug in devices as their only means of protection. Aside from being extraordinarily cost inefficient, their effectiveness is severely compromised by the simple fact that they are so far from earth ground.
With regards to Richard Gray products, I see nothing in the link that you provided that even begins to suggest that they are either UL listed or give any information whatsoever as to either the nature of protection (MOV's, SACD's, gas discharge tubes, capacitor banks, etc.) or how many joules. If you search under my name and the term "Richard Gray" you'll find a greater explanation as to why I feel his products provide little value for the money and why they (some anyways...I haven't looked at them all) don't even work as claimed. What they are though, is a fairly high profit item for stores selling them. As you noticed, they were placed on $35K Mac amps. You see, anyone who can comfortably pay that kind of money probably has a couple of extra thousand laying around. It's like going through the checkout counter in a supermarket. These 'accessories' are like candy and magazines that allow the business to make a few hundred extra in profits and commissions. It's all relative you see, yes? Further, if you do a google search on Gray and stereophile, you'll find that they actually tore into his products and seriously questioned their effectiveness. FWIW, Stereophile rarely tears a new a$$hole into anything.
Many people though, desire the convenience of plugging all their equipment into a single device that also provides other useful features such as switched and non switched outlets, triggers, and so forth. There's a few companies that make products like that such as Monster, Panamax, and Belkin. IMO, probably the best value amongst the three goes to Belkin. You'll find one of their units reviewed briefly here:
http://www.hometheaterforum.com/htfo...hreadid=220247
An UPS for a projector might make some sense if your area is affected by frequent power interruptions because it would allow for an orderly shut down of the unit and likely extend the life of the bulbs which can be costly to replace. There are a variety of suitable products from companies like TrippLite, APC, etc. who have units that sit on the ground as well as some that can be ceiling mounted.
