Just another alternative to the already mentioned options would be the Evolution .46. I picked one up some time back on a buy out from a guy going all electric. It sat around for a year before I decided to give it a try and I was very pleasantly surprised at the ease of starting, the reliability and the power it made. And I have seen them on both RCG and Ebay in the last two weeks for less than $50.00. Just another option if one became available to the OP.