Seeking Honest Opinions: Your Experience with McIntosh Audio Gear

1. Sound Quality: The modern equipment IMHO does not have a signature or colored sound. McIntosh is considered world class as it delivers the highest quality possible. Anything that is considered better is an opinion, and maybe different, but not better quality.
2. Build Quality and Design: Really one of my top requirements. Solid quality of build and timeless design. With few exceptions, most of the units ever built can still be serviced and are still in service around the globe. 
3. Value for Money: Great value! Built in the USA by American workers. You want world-class? This is a good value compared to so many esoteric brands that are priced for style, not performance or longevity.
4. Customer Service and Support: Over the decades, never a problem getting a hold of real people at McIntosh, and factory authorized repair/service centers are all over the country as well... and yes I've had to have repairs (due to Florida storm issues, not the gear)
5. Overall Experience: Can't beat the ownership experience. I recommend to most, but not for everyone, and not for every piece of gear. Budget is an obvious limit for many, but this is gear that can last you a lifetime, and looking back, it's a timeless style as well. I don't buy gear to impress anyone but me, but you can't really go wrong with the core offerings such as amps, pre-amps, receivers, etc. I'm not a fan of the pieces on the cutting edge of digital, so I always suggest alternatives when it makes more sense. I'm not a blind brand-loyalist, and I can smell snake oil from a great distance ;-) 

I think this will depend on which Mac gear we are talking as the Tube stuff and SS stuff are different.  I can talk a bit on the tube equipment that I have, I have a C2700 preamp and MC275 power amp I had a SACD player up until a few weeks ago when I sold it. 

1. Sound Quality: Not warm anymore, rather neutral. very three dimensional sound, great sound stage width and depth,  bass is controlled, layered and surprisingly detailed. Mids are great over all, good tone, good detail, maybe a tad dry with factory tubes (JJ tesla). Hi's are extended and clean sounding not overly bright but not laid back as the older Mac's were. I suspect ultimate detail is not as hi has the SS due to tube limitations but i don't notice. Tone is good but maybe a little leaner then expected with the factory JJ tubes some upgraded tubes make a big difference. quiet no background noise at all (even with 105db speakers) usable volume range even with hi efficient speakers. 
2. Build Quality and Design: design is traditional Mac you either like it or you don't but its stable and has been similar for decades. Build quality as you'd expect for the cost. quite nice if I do say. 
3. Value for Money: I think the value is quite hi compared to many similar priced manufacturers. Higher then most I think, considering what you get for example in the preamp alone for features is well above what anyone else offers at similar money. Mac also enjoys one off, if not the best resale value out there in audio. 
4. Customer Service and Support: Excellent as expected from a large company like Mac. 
5. Overall Experience: I was never a mac Guy until I owned mac now I'm a fan of the sound for value proposition, its higher then most in the audio industry at these price points. 

well that's my 2 cents. I have not heard the new SS mac gear so can not comment on that. 

cheers. 

About four years ago I worked for Magnolia at Best Buy and got to hear pricey Mac electronics paired with KEF Blades in a dedicated room just for that system.  I’d heard the Blades before at shows and found them to be very neutral and natural-sounding transducers, but the Mac gear made the Blades sound like mush with my audiophile demo material that I know very well.  It was overly warm and the top end was veiled and rolled off and sounded nowhere near as good as what I heard at shows.  Very disappointing.  Maybe the Mac sound signature has changed over the past four years, but I kinda doubt it and would approach with caution.  Just my experience FWIW.

i haven't listened critically to mac gear since the 2010s, and i do recall it sounding warmish/mellow at the high end--i can't opine as to sq of their current stuff. i will say, per @glennewdick above, that its resale value is off the charts--i don't know any other brand that comes close. which on a certain level makes it a very good value, since you can always resell what you don't like, often at a premium.