I've been giving propane some thought, too, and have been doing my homework so I can make an informed decision. I asked Dale Isley, the developer of the TYMAR to send me some information, and as usual, he gave me plenty. It's too long to post here, but is very informative. If anyone is interested in having that info forwarded, email me at Quadzilla95(No Email Addresses In Posts!). I'll be glad to forward it to you.