Azonics break but are the nicest shaped bars on the planet..... I had single walls and while one pair lasted me over a year (and being bent by mum running over my bike in the car) since then theyve all been breaking on me . . . . 4 - 6 months..... EA50's - 70's ??? why bother get EA30's for 20 quid - same shape but quite narrow - i used them for a whole year no problems on my echo - decent shape - if you angle them really far foward so you get some upsweep... the zoos do feel nice but - waaay too wide for me. as for stems - in my opinion a stem is a stem is a stem ... hence the reason I run a 10 quid Nirve one (and have done for nearly 2 years) stay away from three bolters though .. . . as for length - 100 with eastons so you can angle forward, lowish rise. 110 with zoos, and as they are lower rise you could get a more elevated one (but personally lower is better (just pull up harder...). RJ