I get a stiff left arm from the 152. I think it's because the ailerons on the three at my school are adjusted for "the larger instructor", so I have to keep a bit of upward force on the yoke with my left hand all the time. I eventually found places to brace my left elbow during my solo xc
Funnily enough, I finished my PPL a couple of months ago and couldn't wait to leap into a PA28 - they just look better, and yes, you can both breathe in at the same time! But I surprised myself - after three or four flights in the PA28 I got back in a 152 and found I'd missed it, particularly that lovely vague "don't worry, I know you didn't really mean to press the left rudder pedal that hard, I'll just keep going this way shall I?" steering mechanism!