I love my keggle !! I can boil 10G batches, and with 5G you don't have to watch for boil overs !
Check bargainfittings.com for parts, I got a them sight glass and 1/2 stainless valve, and paid my local welder $10 a hole for sanitary TIG welds... It's a beautiful thing, and the price was right !!
15 gallons of Yellow Bucket Light
~1 gallon of Little Miss Muffet Cider
12 gallons of Under Pressure Brown Ale
5 gallons of Dead Guyish IPA for a competition