Crystal better than Xelastecs in terms of stickiness but I find they bother my ears after a while - certainly on Isa but that come to think of it could be the wider bore, I might try again with a smaller size (a nightmare to put them on Isa though!).
I bought AET07 on Amazon Japan - HERE - surprisingly cheap to ship to Ireland, about $10 but I always order some others while I'm at it to get better bang for buck on the shipping... plus generally arrive in less than a week. Picked up Azlas there too, Amazon Japan have the best of range of tips in my experience.
I think more what SpinFit do I not have to be honest! - because they have such high praise, I bought lots of them early in the year from Amazon. I'm not a fan of the material they use, I prefer the texture and fit of Azla for example, likewise AET07 - SpinFit have a slight rubbery texture which I don't really like. I must revisit though.
That's fair. There's not a great deal of Spinfits that I reach for anymore. They tend to skew sound quite dramatically and not always for the best. I think next month I'll do a bulk buy from Amazon JP. Earlier in the year I purchased some XELASTECS from Amazon JP and the packaging arrived with a cut in the side and what I was handed was an empty envelope...!