In our old 850 that mount had completely lost its ability to do anything (the rubber was badly shot) and we replaced with the IPD one. It was really easy to do, but I felt that I could feel the engine more on take-off than the OEM...just because it's stiffer. If you don't like the slightly more vibration, then stick with OEM but keep an eye on it and be willing to replace it again in about 40-50K miles. If you go with IPD, you probably won't have to replace it again, ever.
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon

The blue one looks cool, but when I needed one, I got it at Volvo ($10.04). Took off the torque arm, pressed the old one out, and pressed the new one in (I have an arbor press in my shop). Took all of 20 minutes, including wash-up.

If you try to do it without removing the torque arm, you'll have to hacksaw the remaining shell of the old bushing in a couple spots to get it out, being careful not to damage the strut itself. That can make a major mess in the engine compartment. Of course the ipd bushing then goes in easily since it's a two piece unit. To press in the Volvo bushing with the torque strut in place, you'll have to make yourself a tool out of threaded rod, and use a couple plumbing type flanges to get it centered, and even then, if you've never done a similar job before, it can be a hassle.

If I had to do it again, I'd still go with removing the strut, and pressing in the OEM part.

Good luck

Marty
'96 855T

I installed it last year, took only 20 minutes. But 0 effect on performance or handling, just an engine mount. But it looks kinda cool in there....
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96 850T, Bilstein HD, IPD swaybars

shouldnt get either....its only the torque arm mount no effect on suspension!!!

the genuine volvo one is easy enough to fit....witha little inginuity anda damn sight cheaper!