So for dislikes not anything really bad with it. Un box, check connections, set up, connect pipes, fuel up, connect power, bleed fuel line and use. So I've ran it for about 12-14 hours so far. I bought it for use with my RTT and do need more air hose to reach RTT but that's to be expected. I've bought some more 1 in pipe to extend exhaust further away. Around 3.5 / 1 gallon fuel tank that I did run out on second running, I had it powered with 2 36 amp hrs LiPo batteries overnight. The batteries needed recharging afterwards too. That night I had it running heat into 120-180 sf building with door open for venting too.