It seems like I've found my ATi BM stalled about half the time after a power failure. It's done a good job of skimming but a crappy job of being reliable. Based on your personal experience, are there any current "in sump" designs that stand out as fabulous bang for the buck replacement candidates that won't let me down in power failure and are very consistent in skimming regardless of minor sump level changes? Based on your experience would be great. Let's not build a Ferrari here, please, just a solid performer. 107 gallon system THANKS!