I made my decision last night and ordered the Kenwood KX-1060, which has been serviced, has new belts, lamps, etc. The other KX-1060 had not been serviced, had the incorrect toggle power switch and the seller would not accept returns if there was a problem. The Marantz 5030B, although very nice, looked to have worn heads, but it was serviced by the seller.
I paid a bit more that I wanted to - $350.00 + $60.00 shipping + that infernal flea-bay tax, but I've been on the look out for one of these in excellent condition for many years. I plan to use it to listen to my old cassette tapes (many of which were recorded on my KX-1060 back in the day) and to record cassette tapes for my nephew, who will be a sophomore in HS.
I think the show Stranger Things got him interested in cassettes. I bought him an old Sony Walkman, which he loved, but the belt broke shortly after. I ordered a new belt from England and when it finally arrived, I had him help me install it. I told him that if he was interested in using this vintage equipment that it would behoove him to learn how to work on them and make basic repairs. I also set him up with an old 13" CRT TV and a VCR, which he loves. He went to the Movie Trading Company and bought a bunch of VHS tapes for .99 ea. All-in-all he's pretty fired up.
I look forward to receiving my "new" Kenwood KX-1060 and I will report back on its operation.
Next is a turntable & receiver for my 13-yr old daughter. I already have a Yamaha CR-240 receiver, which I had serviced for her, and the old Cerwin Vega D3 speakers I had in college. I'm on the lookout for a good automatic turntable for her, but I may give her my old Dual 1225, but maybe a more modern TT would be better for her - not sure yet.