Propane Tank
If you are able or willing to have an above ground tank, don't buy it new. I just bought a used 500 gallon tank for $250 from the gas company to replace my inground tank that sprung a leak.
Chimney Cap
I took my cap off because it was dripping WAY TOO much creosote onto the roof of the OWB. Major mess and major pain to un-clog, not worth the hassel.
Shaver OWB
I went the full monty and bought the Shaver 340, expect delivery in late September. Worked a deal with my neighbor who does trees for a living. He gets one line off the unit and in return supplies all the oak firewood I need.
Husky 455
I love my 455...I just cut up a 160 year old Chestnut Oak with it. The trunks was just over 4 1/2' at the base and I got about 4 cords of wood out of it. All with my 455 and yes the small gas tank is a good thing as far as I'm concerned as it gives me a chance to take a break.