Is there any truth to this question?

Unsound..There is a couch behind the wheelchair and there is no place to back up to. You are right the Vandys are somewhat dark sounding and the Krell can be as well. When I bought the YBA preamp and amp the guy told me take them home for a week or so and pay me if you like them. They don't have the tight bass of the Krell but they provide a synergy with the Vandersteens that works nicely. The are brighter than the Krell and help to balance out the sound. I've had them for 15+ years and never thought to ask if there is something more until I heard the Music Reference RM 10. Again they are fairly low power but they just do things right with the Vandersteens. This goes against popular wisdom that Vandersteens need power because they are inefficient. My taste is to listen at a pleasant volume I've never pushed the speakers hard. I was an audiologist by trade so I know how a little volume over time can do damage to ones hearing.

Digepix, sounds like you've found your answer. Good listenig.:-)

I think the thread has run its course regarding OP, but the theoretical discussion continues - I'll stand by the position that an amp circuit sounds its best when asked to produce less rather than more power - and if the power thus produce is adequate to drive a speaker, the better we are served. Give me a great sounding speaker capable of 89db or higher, 92-94db or more preferable, then the ability to use as 15-30watts amp makes for audio nirvana. I know, lot's of ifs.....

I like 'the amp of the month club'. Never joined, never will and couldn't pass the physical!

However, given 2 identical impedance measuring speakers....they will react very differently to the same amp based on::
1. Phase data for the speaker. Reactance kills
2. Amps ability to drive such reactive loads.

To your last point of 'how much power is required' please add speaker reactance. Just my opinion, but the 'low impedance' / 'low sensitivity' = bad load thing has been repeated so often that as wrong as it is, has become a form of truth.
A dozen or more posts back, somebody drug Harbeth into the discussion. Low sensitivity? yes, in general. But easily driven by a 50x2 tube amp. The Harbeth? generally low reactance. 'Tube friendly', perhaps.

FWIW, all other things being equal, a speaker that's capable of true live volume peaks would be better. With that said, my priorities and budget considerations would let me compromise on ultimate sheer live volume levels before other considerations. Still, for me an otherwise fine speaker like the Quad ESL's don't cut it. Though it really comes down to what the given room could accommodate, I would prefer that a speaker could at least cleanly produce about 100 dB volume peaks. I really don't think the occasional symphony crescendo is really going to do long term damage to ones ears, it's the sustained high stadium volume rock concert thing that causes long term hearing damage. Just having a system that can achieve a scaled to the room volume level of a live performance, without the worrying anticipation of oncoming distortion or even just strain, makes the listening so much more enjoyable.