i dont think you can say that one offered to you is high quality mericlone. is it offered by original owner who offers division? is it first generation of mericlone? Because when they do mass production they will do mericlone of mericlone and so on. At mericlonning all seedling supposed to be same as original but some mutation do occurs and that plant little bit different from original. and now imagine that plant was mericloned and one different from this batch was mericloned again so everytime you will have somewhat different.
Thats why divisions are much more valuable, it is the same plant exactly.
If you just like flower appearance and for you does not matter little tiny (or not that little) difference go for mericlone. If you are planning on being great collector and maybe do some hybridizing work your best option to go with division.