mine was the first orange 5, in fact 3 of us bought them and every one had alignment problems, and as i said they just twisted the rear end which looked aweful on close inspection
as for brake jack it does exist some people just don't notice it
but the differance in a horst link and a single pivot in terms of brake jack is a little more than marketing crap
i too have ridden horst link, vpp, four bar and single pivot and by this i mean owned not just ridden for 10 minutes, and there is a real differance some have positives and negatives obviously, but the orange 5 just did'nt cut it for me.