hiya, i have a variety of clubs (about 14 sets) like prosimmon peter senior cavity blades - nice + hallmark forged blades - 40 year old hand tinglers, status be-cu perimeter weighted (nice) + stainless version, taylormade tp td blades - nice, slazenger californian blades + xl 4's - good but don't miss hit them, lynx masters (cat logo) - nice, maruman mst 31's - lovely "feather" blades (great score!) mizuno tzoid pro - nice + zoid ti's - nicer + astrons and mx 900's, (ok so i'm a little out there :) wot golfer isn't ?)
the mx 900's are really nice to hit, you have to be patient to find your line with them as a fast swing may produce a hook with the 3 - 4 - 5 irons, sort of half hybridish but they can give you good and easy distance with a high ball flight and soft landing, the 6 - 7 irons are smaller versions of the longer irons and just as nice to hit, the 8 - 9 - pw are more cavity blade type and are great to use (such a pity there is not a full set of that design) the clubs are touted as game improvements and are a progressive set with a nice sweet spot, the longer irons can be hard to shape and they seem a little fat/chunky to the eye but you get used to that.
i haven't played a round with the other mx clubs but have had a hit, the mx 900's feel and sound good (better for me), they would be my choice. but as with any club head, shaft options produce differing results, mx 900's are forged and feel quite soft but you would be best to have a hit with each type you like, do not rely on window "shopping" to find out where your "comfort" level sits, some channel backs can sound tinny and can seem to have less feel, cast sounds and feels different to forged, so take your time to suss it out for you, the little collection i have bears testament to this, hard steel - soft steel - cast stainless - forged - be-cu, all feel and sound different, get some direction from others but find out for yourself, you will lessen any disappointment that way, once you decide, get custom fitted if you can then be patient and find your feel for them, taking atleast 4 - 6 months...hope that helps...