i have played the new professional in 1.20 and was really pleasantly surprised - a thin multi that was rather low powered, offered good control and touch, having a higher initial tension loss but then keeping well and the even bigger surprise was that it was rather durable!!! (which means some 9 hitting hours for me - put this in relation with the gauge!).
where we seem to drift apart is that i found the mantis comfort syn to offer EQUAL playing pleasure (at more than half the price - but also considerably less durability - 5-6 hitting hours max.). while we seem to agree on much about the mantis comfort syn, obviously in respect to the isospeed professional (not classic which i haven't played!) we are almost at opposite ends.
the control i played and did not like, due to the solid central core it is much stiffer than the professional and to my surprise also a lot less durable, in spite of the larger diameter i played (1.30mm which is 16g i guess). a lot less touch to it also. maybe as full bed it's o.k., as a cross it did not perform in my combos i tried.