I’ve got the Spectral AL7 and can’t fault it. Only problem I’ve had was the usual reverb issues and it was dealt with efficiently. I’d buy again no problem.
I bought a spectral last year and have had a couple of issues with chainguide and reverb and on both occasions I cant complain with the service I received. They replied to their emails within a day or 2 and replaced both parts with no hassle.
I am currently riding a medium 2015 spectral 650b and am 5’10” ,when the canyon sizing calculator put me on a medium frame I was very dubious but eventually trusted them albeit reluctantly but I have to say I’m glad I did as it fits me perfectly.