Way back when I used my MA 230 with a 12" stephens and Oxford horn in a Davis Helmholtz resonating cabinet, then with a Altec Coronado, and then a Pair of Altec Carmels. We had customers that used 5100's 6100's and 6200's with everything we sold from Boze 901's , to Altec, B&O, EPI, Ortofon, Bozaks frrom bookshelf to Symphonies and Mac ML-1, 10. Even a few JBL and Ev's were powered by Mac integrateds. I preferred the MX-110 with choice of 225, 240 or 275 depending on the requirements of the speaker. The 225 and a pair of MC-30's was vey popular with the Klipsch crowd, and remain so today. MX112, 113, 114 and 117 were real popular, too. But nothing like the 110. Its was the pinnacle for tube sound a lot of people thought. The Z version was avery smooth sounding unit. If you want the system that is the epitome of tube sound combine a MX-110 with a pair of MC-60's with a pair of Bozak Symphonies for great sound from the 60's. The receivers were popular , too. The 1700 and 1900 were our best sellers. I liked the 4300, too. Though I have heard most of the later integrateds none have really set them selves apart in my opinion. Maybe the 8000 would be an exception , but I haven't spent any real time auditioning the unit.
But if I owned a pair of XR-7's, 19's, 20 or 22's, ML-4's and was short on space, the MA 8000 might be the perfect match. The ML-4 and XR7 were strong performers with MC 2300's and I'm sure a MA8000 would be a real step up in grace and feyness.