McIntosh MR78 upgrades?

So I heard from the folks that I brought my MR78 to for recapping. They advise that some of the caps inside are just a few years old, and some are original. Apparently someone tinkered around inside several years back. I'm told the work was neat and high quality caps were used. Curious that whoever did the work a few years ago only replaced a few caps. 

I had some good tuners in my audiophile life (Naim NAT01, Sequerra Ref) and still have a Tandberg 3001A for sale and a recently acquired Leak Troughline 2 (shipped to London Sound for check restoration and alignment) with De Paravicini stereo decoder, but never a Mac yet.
Sure one day I will have one but hesitate between MR78 and 77. I heard the "77" would be more musical sounding than the "78" model (without mods).  Did someone on the forum comared them ?

So- to update this old thread I started years ago, the cap and LED work I had done in 2017 turned out to be $125 or so. In March 2020, but before NY went into lockdown, I sent my tuner to AC for Rich Modaferri to wave his magic wand over it. I’ve had my tuner back for a while now. It was worthwhile and dealing with Rich was both a pleasure and enlightening 

cleeds, I am not in any way challenging your statement that FM radio is a "huge industry" in the US, but with all respect can you explain the why and how that works?  Thanks.

lewm

cleeds, I am not in any way challenging your statement that FM radio is a "huge industry" in the US, but with all respect can you explain the why and how that works?

Sure, @lewm .
There are more than 10,000 FM radio stations in the US and more than 6,500 of them are commercial operations. There are also about 10,000 translators. Total annual revenue, including the non-comms and about 4,700 stations on the aging and struggling AM dial, is about $20 billion.

Radio station ownership has undergone substantial consolidation since the FCC changed the rules in the mid-90s. Just a handful of owners - iHeart (which used to be Clear Channel) , Cumulus, Entercom and Townsquare - own the bulk of the major stations. And some of the non-comms are also owned by sophisticated and well-funded entities.

So even though the industry is facing many challenges to its profitability, including the impact of Covid on ad sales, FM is big business, and it relies on the huge installed base of analog FM radios, especially in cars. Many of these listeners are "casual listeners" who enjoy FM for convenience. The industry couldn’t get them much interested in so-called "HD Radio" and that may help explain why no one seems to have any appetite for fiddling further with FM.

The AM side is another story altogether though, and there it is possible that it could evolve over time into a digital-only band. There is a pending FCC rule that would allow the first steps towards that.