I guess the title sums up the purpose of this thread, so no need for a long explanatory paragraph:

What's the most impressive and/or dissapointing audio setup you've heard?

Most Impressive for me (but by no means, most expensive)

This was almost a three-way tie between the following (I've listed them in order of preference from most favoured, though the differences are very minor).

1) Monitor Audio GS20 + Musical Fidelity XT100 + Musical Fidelity X-Ray v8 (total cost about $6K)
2 Monitor Audio GS20 + Audio Refinement Complete Integrated Amp + Audio Refinement Complete CD Player (total cost also about $6K)
3) Final Sound 400i (Electrostats!!!) + Audio Refinement Complete Integrated Amp + Audio Refinement Complete CD Player (total cost also about $6.5K)

Most Dissappointing (not so much because of Price but I guess based on reviews and hype)

Magnepan MG12 + McIntosh Integrated Amp + McIntosh CD Player (Not sure what the price was, but all products were new, in what was claimed to be an 'ideal' listening room at the dealer).... Maybe it was as the dealer claimed 'my musical' selection that was not right for the setup, but for me it was a major dissapointment.

The weird part is that I always got the impression that planar speakers such as maggies were supposed to sound similiar to electrostats...Yet I really loved the stats I heard but disliked the maggies...

Anyway, what are your most and least favoured setups?