Sandy, I haven't actually purchased anything at this point, just in the planning stage. I have never actually done an all-grain at this point either, but i'm moving that way. So, I actually have a chance to redesign my brewery (for all grain anyway) and would like to move to a HERMs automated system eventually, if not right away. Therefore i'm looking at what i have and what i would need. My thought now is a 3 container system including 2 SS pots (boil and HLT) and a 10gal cooler for the mash tun. My initial mash water would come from the boil pot, so while i'm heating the initial mash water to temp in the boil pot, i would be heating the HLT water for the heat exchanger. Mash-in, then start the HE pump. I would then use the HLT water as my sparge water at the end. Do the boil, fill the HLT with ice water and cool back through the HLT HE coil. Does this seem correct to you guys or am i missing something fundamental here??? So, with all that being said, is 5-7 gallons typically enough to sparge for a 10 Gal batch? Is a 15.5 Gal kettle big enough for a 10 gal boil (Blichmann suggests a 20 gal pot for 10 gal batches)? If the 8 gal boil pot is not big enough for the HLT, is it big enough to use as a mash tun, and instead of buying a 10 gal cooler, i would by an appropriately sized HLT Pot. Sorry guys for all the questions by your incite is quite helpful...