I'm an ex-peco that now does double brewdays, one in the Bulldog Brewer and the other a maxi-BIAB on the stove. I originally moved because I kept scorching the wort. In hindsight this is probably because, in search of high efficiencies, I squeezed the life out of the bag and probably got quite a lot of fine particles in the boil.
I have no regrets. The Bulldog Brewer is so much easier. No moving hot bags of hot grain, dripping and making a mess. No more waiting over hot liquor with a thermometer waiting to hit strike temp, and no more having to wrap up and insulate then unwrap to stir the mash. The recirculation gives good efficiencies and crystal clear wort, and better control and reproducibility. I've hears similar things be said about the Ace, Grainfather and Braumeister. You can still use the peco as a sparge water heater.
In fact, it made life so easy that I started doing a mash in the peco at the same time, to do maxi-BIAB or small batch on the stove. It works well this way, I did a bitter and a saison brewday before last, the last one was Munich dunkle and Bohemian pilsner, next up is Zombie Dust and a stout. After that I plan to have one batch which is ready quickly and a second which I can put aside for ageing.