Dual purpose kettle? (5/10 gallon)

[tbergmania]

Is there any dual purpose kettle size? I do 5 gallon batches now but would like to be able to do 10's in the future without upgrading all my equipment. Is a keggle or other 15 gallon kettle a good size for both batch sizes?

 

[JewBrew]

If you can boil 10 gallons of wort in a 15 gallon keggle logic dictates you could also boil 5 gallons of wort in that same keg!!!

 

[JerD]

Get the keggle or 15 gallon kettle. The only drawback to a 15 gallon kettle is there will probably be more surface area than a ten gallon kettle, so you might get a tad more boil loss. This really isn't a major drawback, just start with more wort.