Here's the thing - us "enthusiasts" wouldn't be that put out, and would see the value in a home demo option from speaker manufacturers - such as Mordaunt-Short, or whoever - but I reckon he would just find it all too much like a pain in the ass - you know, having to pack them up in the event that they didn't suit (I mean, I would def try and sync deliveries to ensure I could A + B (and if possible C) test the components)!!!
This is why I'm trying to brain pick here.
I personally think the only reason he likes the idea of an Arcam amp, is because that's what his old one is and he likes it - it's quite simple - and he doesn't have a lot of patience - not because he's actually made any critical assessment of whatever is out there, or even that he has stacks of experience with Arcam gear.
It's his money I suppose - I just don't want to see him buying a lemon - and would rather, much rather, that he got the absolute best bang for his buck - regardless of manufacturer.
I tend to think that in order to get the best value, you need to be prepared to swap brands - you need to experience the stuff - scout out for advice, and then ultimately make a decision. If you've done your homework, and put in the legwork, you very very rarely get buyers remorse.
Some things maybe aren't so easyy to swap from - eg smart phones, or computer systems or whatever - but given the relative simplicity of audio gear, it shouldn't be a massive deal going from one great brand to another. For the most part, user interface design (ie knob location, dials, text screens and whatever) is fairly well established with amplifiers and the like - so making the leap from say Arcam to Yamaha, or Rega, or whoever won't be that tough - it's not going to take hours, days or weeks to adjust. Menu systems can be a minefield from a user perspective - but most amps are fairly simplistic anyway.
I also don't think the sonic signature of his existing system is such that a move to a non Arcam amp would be a big problem, or that other speakers such as what we've been talking about above, wouldn't be acceptable to him. I mean, his Arcam is over 20 years old being an 80s unit AFAIK. (Any ideas when it was launched by the way - wiki only mentions the A60)
Here's another way of looking at the issue I have - ruling out home demos and such.
If you had £1200 to £1400 (because overnight the budget went up) - what would you buy in an amp / speaker configuration - and with this budget - would a CD player and or DAC add more value to his set-up than putting the money towards the speakers and amp?
I think his existing CD is an Aiwa XC 700 deck by the way. (1 BIT D/A CONVERTOR, OPTICAL DIGITAL OUTPUT, 8 TIMES OVER SAMPLING, QUICK PEAK SEARCH)