i use the ampeg 115e, and from my experience and everyone saying 15s dont give you punch, its THE best cab i've played through, i will not get rid of mine, and considering getting another (purely aesthetic reasons) the full range of this thing is incredible.
my rig is a ampeg 115e, power section from genz benz shuttle 6, and pre is sansamp rpm
i have always found ashdown to be really boring sounding and flat, personal opinion of course, but the ashdown 410, even paired up with the ashdown 115, just does not compare to the bite, growl, and clarity that the 115e gives me!
but you might disagree - just check that its loaded with the eminence kappa 15a, dont know if mine was altered to that as i bought it second hand!