I am enjoying seeing everyones opinions in this thread. I have two McIntosh amplifiers here along with Japanese and many others. They are what they are and seem to be, each with its strengths and weaknesses. I feel that those with the least weaknesses; be it reliability, beauty, performance or just the attraction of the product to be the 'best" overall. The two McIntosh amplifiers rank quite high but I am always looking for something 'better'.
I love the way McIntosh and Accuphase amplifiers are made, look and perform. If you are comparing those, it would be a toss up. Each product "name" may not actually represent the entire product line. I am sure each brand has its "dogs" or lesser products. With McIntosh, they are few and far between. I have yet to find a McIntosh "dog" but they could be out there...especially if they were subjected to misuse.
McIntosh compared to Accuphase? That is tough. Mcintosh compared to cheap plastic Japanese receiver? No brainer there.
Most of the vintage Japanese mid fi really need not compare either. McIntosh products are high end. All of them. Not fair comparing a mid fi product with a high end item but I will admit, some of those older Sansui receivers and Yamaha receivers do the job very well.