I think the M55 cast or the Quad Mount Vernon would be good for your situation in a pellet stove, if you like the cast iron. I'm sure thereare others iut there that could do the job and some people are partial to the steel stoves. I wanted the look of the cast iron so I picked one that suited aesthetics, budget and function.
Yes, the PH numbers are great. Some people say that numbers can be manipulated, but what else can we base our purchase on? If it is customer service and satisfaction then Woodstock has some of the highest and a guarantee to back it up. No other company I know is willing to take a stove back and refund you like they do, wood or pellet! The soapstone has a softer heating capacity, sort of like that of a convection stove, so it will not burn you out of a room. The moment we buy a house, that stove will be at the top of the list of things to get, unless something else comes along with superior attributes that fit my needs. Buying from Woodstock you won't be paying the dealer premium or the cost of shipping the stove to the dealer. Of course, there is a shipping cost to you as you are buying direct from the manufacturer. Did you check out the website? Woodstove.com is the address. As far as your insurance co, many folks around here have diy'd theirstoves with no problem, as long as it is inspected and approved not many companies will have an issue. Of course, checking with them first would be prudent.
Anyway, this discussion could go on forever. Wood vs. pellets, there is no right or wrong here. Both are good for the pockets and bad for the fossil fuel man!