I've not tried the 210 but I can give the PF-50T/PF-115HE my personal high praise. I've been steadily gigging (blues) with the rig for going on 9 years. 3 years ago I found a great deal on a pristine used 115HE, and I just had to do it BCIMO that stack is pure sex onstage. In all honesty the single cab with the 50T rocks and easily handled up to medium-sized stages, I just wanted the stack for looks. I normally take my Bassman 100T/410 rig once the stage is beyond a certain size, but lately I've pushed that using the stack on a couple of festival stages recently and it was great. BC the PF50T sounds so sweet when it's huffing and puffing, and the output transformer DI gets that to FOH, as you say. But I don't have experience with a single 115HE on a large stage. You for sure would need monitor support, or you would want it elevated closer to ear level, probably both.
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