Just wanted to say, hello & to comment of this being an excellent forum, good info & friendly.
As the title says: On the scout for a new OWB. Last week, my Aqua-Therm of 13 good years, has sprung it's first leak near the feed door. Water pressure starting at, 25 down to 0, in less than 15 minutes.
For the past couple of days, I've been reading posts in the category, Central Boiler.
My layout is like this: Lived in our same Wisconsin home for over 30 years, ranch style with 1100 sq ft & another 1100 sq ft mostly finished but uninsulated basement. I think our house retains it's heat fairly well. My wife & I like our heat in the upper 70's, we have always used wood heat since the first year we moved in this house 30 years ago. Our back up heat is LP furnace which we use only in early fall then again in late spring. I estimate that we go through 7 cords of oak per season, from October - April. 
I'm here to get a feel of what's available for OWB, basically a conventional design, with decent $ return in a short while from my OWB purchase. Ever moving out of our home hasn't crossed our minds, especially in our 50's, so, it's a safe bet we are to stay for the long haul with our good neighbors in this farming valley.
Central Boilers have been on my mind last couple of days, CL 4030 or CL 5036, whichever fits my needs. My old Aqua Therm was easy on me & always kept us warm, with at least 16 hours of burn time, even when overnight wind chills are at 30-50 F below zero, especially this winter. Sorry, grown a little attached to my outdoor wood cooker. Anyway, appreciate any thoughts on this search.
oaky