Just a little feedback on the slim straights.
I have to say I like them quite a lot. The Cone denim is quite soft and a bit hairy, very comfortable and pretty light, great for warmer weather.
I got them in 32 and they fit very well, slim but not tight in the thighs (the Tellason John Graham Mellor in 32 for example are too tight for me).
I can't compare to the slims since I haven't worn them.