Need some input. I replaced a Raypak heater (35 yrs old) with a new Raypak btu266 in 2011. It was supposed to be commercial grade. 2012 the control panel died, replaced it under warranty. 2013-2014 a few ignition issues. 2015 the control panel died, replaced it at my cost. 2016 it ran great. 2017 constant issues. 2018 it died. Very disappointed that I have to replace it so soon. We only run it from May through September. First estimate is for a Penair, pricey and I am not familiar with the brand. Getting a second estimate for a Raypak. I heard that as a reaction to the recession, Raypak changed their products to less expensive materials to maintain their prices. I was hoping to get a least a dozen years of issue free performance out of a new heater. Any insights, advice or suggestions?