@major for the boil I can understand, but what about mash temps? do you recirc?
Edit to say, What I'm really trying to find out is if I should buy one of those BCS-460s or do something different. I had considered 9Kw elements instead of 5,5Kw just because of time interests. Since I'm doing this part-time, shaving half an hour off time-to-boil is very very interesting.
Also to note, most pico/nano systems here use these giant 25Kw propane gas rings. I imagine I'd blow through a standard propane bottle toot sweet with one of those, so yeah, Electric is easiest access.