I would stick with the big names - APC, Tripp Lite, Belkin, etc... The brickwall type devices are highly controversial. I'm not saying they aren't better, but I question the fact that these larger companies are using inferior technology. There are too many variables and electricity is too complicated. I would tend to "believe" the technology of the larger companies over these smaller brickwall type companies. Even though they may use MOV vs. series protection, almost all decent devices will warn you once the MOV protection has failed anyways. Another post I read said that a good MOV device will generally last more than 15 years as far as the protection circuits go, because the higher end MOV's are usually made in layers.
So just be careful with those brickwall devices, they may be better but there is really no way to know unless you have a PHD in electrical physics. There are too many factors, one being the size of the device, I read somewhere that series type protection needs to be specially designed and generally placed outside, so who knows what the truth is