Unless I was moving to 10 gallon batches- I'd just sell them, probably put the money toward a nice Boilermaker brewpot. But, my attitude toward keg conversions has changed in the last year. A year ago, the savings realized in a keg conversion seemed like a big deal. Now, when I look at the money involved in a year's brewing, buying a large piece of "capital equipment" like a brewpot, mashtun, or fermenter doesn't seem like that big a deal, and I'd be far more inclined to just buy a purpose designed and built piece of equipment. If and when I ever move in this direction, it's going to be "go Blichmann or go home."
“Malt does more than Milton can / To justify God’s ways to man”
-A. E. Housman (1859–1936). A Shropshire Lad , 1896.