Hi Mystex,
I have seen the HS1 in action as well as the 11HT (but not the 12HT). The 11HT produced a much better picture than the HS1 in many ways:
(1) The chicken wire effect was obvious on the HS1 at a reasonable viewing distance (10 feet), but not on the 11HT at the same distance.
(2) The picture was better on the 11HT, brighter, clearer and more cinematic than the HS1.
(3) The 11HT had better blacks than the HS1, which were immediately obvious.
I saw a SIM200 demonstrated over the weekend. Interestingly, I think that the 11HT had a brighter picture, but arguably the SIM200 was more cinematic. I thought the SIM produced a good picture, but at £6,000 I think it does not represent good value for money. In that respect, I would agree that it's not that impressive.
I haven't seen the 12HT in action, but my educated guess is that it would be much better than the HS1, a little better than the 11HT, and for £3000, much better (in terms of value) than the SIM200.
Cheers,
Ice