My opinion on this has changed!
I definitely like fixed axles on the heavier side. I feel the BC Apollo might be my favorite overall for simplicity and “it just works”.
But the Tom Kuhn Clean Machine is a close second – I love the reversibility, and the replaceable axle sleeve, so I can use it in pure looping imperial mode or chill butterfly. There is something pure about the classic No Jive take-apart design.
I just weighed them, and yeah. Apollo is 61.2g, CM is 55.6g. I don’t think i would want anything heavier than the Apollo, though. That’d be kinda nuts.
They are strikingly similar in dimension, looks like the Apollo is a mm wider maybe? The butterfly angle is a tad steeper on the TK as well. They could easily be siblings though.