Someone had expressed an interest in a comparison of these two. Here ya go:

Specs:
PMBs, UST Tour Weight (110g) S, standard length.
870ti, Mitsubishi Adams (55g) R, +1/2" length.

This looked to be an interesting comparison. The HiCor 870ti with lighter shafts and +1/2" versus the PMBs with their stronger lofts (2-3* stronger). I've had a set of the 870ti back in 2014, loved them, wasn't a fan of the feel (with DG300 steel shafts then). My biggest issue then was the height of the short irons, they seemed to go straight up.

The PMBs had just beaten out the 575mmc (I wouldn't say beaten out, they were both great, I just like the gapping of the PMBs better). But this set of 870ti showed up on ebay and I thought I'd take another look. Kudos to the seller, this is a fabulous looking 870ti set.

I've gotten a couple of launch monitor sessions in, and here's the averages.

4 iron: PMB (21) 192 yds, 870ti (23) 190 yds.
7 iron: PMB (31) 159 yds, 870ti (34) 157 yds.
9 iron: PMB (40) 139 yds, 870ti (43) 124 yds.

With the 55gm shafts, the 870ti short irons went insanely high (5.5 higher launch angle for a 3 loft difference). The feel of the 870ti is muted nicely by the graphite shafts, they almost feel normal now. The longer clubs, not much difference noted in length, but the ball flight again is higher.

I'm already a high ball hitter, so the 870ti may be too extreme for me. But man, those are some of the coolest looking clubheads. The PMBs have no such wow factor. But there is no denying that the PMB flat out perform.

I still want to put the 870ti in play on the course, see if the launch monitor readings equate to real play.

I didn't care for the set I picked up. I planned on losing 1/2-1 club distance from my Adams because of the lofts but I was a full 2 clubs short or more with the 870's. The 870's had S2S White reg flex and the XTD's have Matrix Program Q's in reg flex so the comparison wasn't quite apples to apples but it wasn't far off either.

The 7-P went crazy high with huge distance loss. The 5 & 6 didn't go near as high but still had big time distance loss.

At first I thought my swing was way off as I was only getting 105 or so with the PW. Grabbed my Adams PW and hit 5 in a row about 130-135 with a much more penetrating flight. And it was like that all down through the set. The 870's didn't seem anymore forgiving. They were slightly more accurate but not enough to justify a 25-30yd loss.

Also I didn't like the funky look of the 8,9,& PW.

    Bill Bill--large difference between the Matrix Program Q "R" if it's the 85g to a Wishon S2S White "R" 74g. It's more the shaft than the head. Poor comparison IMO. Better comparison would be a S2S Black "R". This in all probability would have brought down ball flight plus same shaft weight and profiles closer.

    Folks aren't comparing apples to apples in these comparisons no wonder the results are not gong to be close plus these iron designs and shafts may or may not "fit" the individual.

      Scott, I agree these are apples to oranges comparison. But I did have 870ti on DGS300 previously, so my experiences are with one of the lowest launching shafts (DGS300) and then one of the highest (55g graphite).

      I had this discussion with Tom himself on the 870ti, and he was clear that the HiCor effect of the 870ti would appear as distance in the long irons and height in the short irons. I doubt that Bill's two shafts are nearly as different as my two were.

      If you struggle with hitting irons low, the 870ti heads could be amazingly helpful. You'd get added distance in long irons, and more height in the short irons.

      For me, the 870ti are still a consideration. It looks like the gaps would free up another club spot. But can I handle the super high flight short irons? Here in SoCal, wind is minimum, so maybe.

      I had Steelfibers in mine for awhile and that was a match made in heaven. I now have Recoils in them. Saving them for the golden tees.........