I'm kind of a late arrival to this thread, but need to add my 'too scents'..I've been a ham for a long time and have had experiences with 'the big three', Yaesu,Icom and Kenwood HF and also VHF rigs.
I've had zero issues out of my VHF equipment from any maker.
HF is another story altogether.
Yaesu FT-101; What a great performing tank that rig was!
FT-757Gx; So much stuff crammed into a small package. Impossible to werk on -- but then, the NEED to never arose!
FT-840; I currently own FOUR 840's. I like them more than any other radio I've ever owned, except a Kenwood TS-850S I bought new. The 840 is extremely easy to understand and operate. There ARE some design flaws tho. THese rigs get waay too hot at the 2 watt, flameproof (and that's a good thing) resistor near the audio and regulator IC's. I dunno why, but they all do it, although none have ever failed because of it.It has been reported that the 840's drift... Well, my four never drift. What's up with that?
Kenwood TS440; It kind of sucked on SSB receive, but the AM was great.
Had finals issues with it. and the display 'tube' failed (old 'nixie' technology).
TS-850s. Awesome rig! Wish I still had it, but then again, the guy I sold it to had more problems than I can recall right now. He used to refer to it in past-tense as his "boat" -- happiest days was the day he got it and the day he sold it!
ICOM 703; A genuine dog! Wonderful SWL receiver , but You cannot keep preamps or finals in this turd. But what really makes this a turd was ICOM's service after the sale. I sent mine off and 60 days later/ 60 bucks lighter, they shipped it back saying it was "beyond repair" and that "it had been modified"... Had to fix it (and sell it quickly) myself! If i ever am unfortunate to be stuck with one, NEVER AGAIN will the maker ever see it!
All that being said: I would steer-clear of any one of the above because they are old. Old rigs are like old cars. 20 year old 'lytics are a crap shoot... Of course, you might just develop a "love afair with them thar 840's after using one for a while, so re-capping is just a maintanence issue for you.