Can't comment on BouMatic. Put in a new Mueller in 2007, thinking it was the Cadillac.  Only thing I like is it cools really well.  Agitator drives have gone out more often than I can count. Keep a spare on hand.  Spigot valve always wanted to drip.  Ended up putting the butterfly shaft in a vice and twisting it to close far enough.  Wash system is difficult to work on when pump needs work. Multiple problems with wash system. Chemical mixing funnel wanted to run over and etc.  Not impressed with engineering.  Agitator paddles never have cleaned well. Seems they are curved too far to wash on the bottom side.  Pair of scroll compressors have gone out twice if memory serves.  (may not have been set up right )    Not what I expected I guess. New ones may be better.