My own experience with two stroke oils:
Used klotz super techniplate and original techniplate with very good results, even in two mercury outboards(gasp!). Smells great at start up but goes downhill after warm up.
Original is probably my favorite oil but very hard to source in my neck of the woods.
Gave k2 a whirl, good results but still bad odor. Belray h1r, changed tune a little, still smelled bad.
Tried Orange bottle stihl dino with great results but stinks to high heaven. Husky xp same results, probably worst smell on clothes after running of any oil I've used.
Amsoil interceptor and saber, good results also but smelly.
Just started using mobil racing 2t red dyed version. So far all ope running fantastic and it's by far the least offensive odor of any I've ran. This one I may stick with if I can find a good supplier.
I've never seized a two stroke engine, and I've never had anyone I know seize one due to the oil they mixed with. I've got an old lawn boy two stroker that's got a million hours on it and I usually just run stale mix in it (the can that the old mix goes into)
Can't kill that damn mower. Always starts on the second or third pull cold.