This tweak made such a difference that I just have to share it.
I have my Studio Two's for what, eight months now I think. They came with the Motorola piezo and I later upgraded to Wayne's new Vifa replacement. That was a good decision, with no regrets. I posted a review if you care to search for it. But this new tweak, one I thought would most likely be marginally audible at best, has turned out to be unbelieveable (at least in my system). Ok, here it is. I replaced the inductors with .51 mH Solen 12 awg. Not cheap but well worth the investment.
The Technical Stuff; That drops the inductors dc resistance from .5 to .14 Ohms.
The Real World Stuff; On powering up my Bottlehead tube gear I heard a slight hum from the speakers that had previously been inaudible. A good indication of increased sensitivity from the woofer! But the proof is in the music. It's been a week now and my first impressions haven't diminished at all. I hear not a murky, fuzzy or bloated presentation but one that gives more substance to the midrange and heft to the bottom end. All of the detail and definition is there and nothing has been masked. Just a clean improvement. Ok, this is getting long so here's a link:
http://www.partsconnexion.com/catalog/inductors.html

PS - When I show these to the neighbors I no longer say they're a good speaker "for the money". They're just dang good.

The stock 0.5mH coil used in the two π tower sounds great to me with the Stoetkit amp, the Nelson Audio SE8 and the Audio Note Kit 2. Of those, the Audio Note and the Nelson Audio are SET amps. On the other end of the spectrum, I think the two π tower also sounds good with solid state receivers and home theater systems. Output circuit resistance is probably a little less an issue with solid state, until the resistance becomes pretty large, like half the value of the voice coil or so.

I ran Paramours using stock output transformer and Solen parafeed cap, so I kinds of know what you're describing here. I used Valve Art and Electro-Harmionix tubes in my amps. I think I'd have to agree with you that slightly lower Q speakers tended to sound better with Paramours, and reducing DC resistance tends to push the system in that direction. Swapping the coil is an easy mod, and I'll bet it sounds good. Might also be worthwhile experimenting with replacing output transformers and maybe changing parafeed caps to see how that sounds too.

Garland