Current boss is best boss.

Seriously though, he's a great guy. He has a lot of knowledge technology-wise, especially in electronics and will explain things to you without tiring if you don't understand them.

He lets me run my thing which is cool and letting me run too freely/not taking enough time is probably the only thing I'd criticize.

He seems to have a similar mindset to mine which makes it (most times) enjoyable to work with him. I like him personally - though I'm sometimes not sure whether he gets my somewhat weird humour.