I first got myself a Monster, but then I started to realize it might not meet my requirements so I am exchanging that with a different model/brand.
I had my eyes on the below Belkin(s).
Point number one. Surge protection is always about where energy dissipates. How does that Monster or Belkin, with hundreds of joules, absorb typically destructive surges that are hundreds of thousands of joules? Neither even claim that protection in their numeric specs. Don't take my word for it. How do hundreds of joules absorb surges that are hundreds of thousands of joules? It doe not even claim protection. It simply let's popular urban myths promote it.
Either that energy is harmlessly absorbed in earth. If permitted inside the building, it will hunt destructively for earth ground via appliances. It is only your choice. Either you earth surges harmlessly where all wires enter the building. Or surge currents find numerous conductive paths inside the building - even through appliances.
Where does Monster or Belkin even discuss this? Where does either protector have the always required and dedicated wire for 'less than 10 foot' connection to earth? Two questions. Any protector that violates either is ineffective.
You want protectors from responsible companies such as General Electric, Intermatic, Leviton, Polyphaser, Siemens, or Square D. The Cutler-Hammer solution sells in Lowes and Home Depot for less than $50. Effective protectors also available from every electrical supply house.
No protector is protection. Remember that reference to popular urban myths. Well, do to those myths, the sentence will be hard to understand. No protector provides protection. The effective protector connects surge TO protection. Protection is always the single point earth ground. A protector is only as effective as its earth ground.
Essential to protection is an earth ground that both meets and exceeds post 1990 National Electrical code. Every incoming wire (in every cable) must make the always required short connection to earth. Either directly (cable TV, satellite dish), or via a 'whole house' protector (AC electric, telephone). If any wire violates this 'less than 10 foot' requirement, then household protection is compromised.
View spec numbers for a minimally acceptable 'whole house' protector. A direct lightning strike is typically 20,000 amps. So one 'whole house' protector from responsible companies is rated for at least 50,000 amps. Yes, we earth a 'whole house' protector so that even direct lightning strikes are made irrelevant. So that even the protector is not damaged. Only grossly undersized and ineffective (plug-in) protectors fail. Fail because the naive will then recommend that failed protector.
All appliances contain significant protection. Protection that may be overwhelmed by a rare and destructive surge. So we earth one 'whole house' protector to make that rare surge irrelevant. So that protection inside every appliance is not overwhelmed. So that all appliances including the furnace, air conditioner, dish washer, bathroom GFCIs, and the entire home theater are protected.
Telco computers are connected to overhead wires all over town. Are threatened by about 100 surges with each thunderstorm. How often is your town without phone service for four days? Telcos locate no protectors adjacent to electronics. Every incoming wire in every cable connects as short as possible to earth via a 'whole house' protector. To make protection even better, those protectors are something less than 50 meters separated from electronics. Yes, separation increases protection. You do same.
Sentence one: protection is always about where energy dissipates. So that energy is not inside the building hunting for earth destructively via a home theater, you must earth one 'whole house' protector. And upgrade earthing to both meet and exceed post 1990 code. Separation from the appliances mean even better protection. A solution that costs about $1 per protected appliance. The superior solution meets your budget - and is protection for everything. If your home theater needs protection, then so does the furnace.