What I have done is get true vintage original kits for only the 5 cars that have special meaning to me.
M38 Wild Willy, the first Tamiya I ever drove. It was my brothers and that was my first introduction to the addiction. I have an original one, only need one small plastic par, one screw and nut, and decals and it will be done.
Original Super Champ. Same brother gave me one. I have one, complete with vintage radio gear. All I need for this one is decals and to paint the re re driver.
Wheelys Wheeler. I have a line on an assembled, never driven one I am trying to work a deal for.
SRB F150. Always wanted one, don't have one yet, but I keep looking.
Blazing Blazer. It always looked so awesome in the catalogue, I'll probably never be able to afford one. If Tamiya re releases it I will buy it as long as it comes with the same tire.
I also am looking for a modern discontinued kit, the ta02 mustang. I have a 95 gt in my garage and I would love to paint one to match. If anyone has one, or a new unpainted body kit in the US send me a pm!
The other vintage cars I own are ones I got for a price I couldn't resist, Blackfoot, Frog, and 2 Lunchboxes, and 2 Monster Beetles. All of those get driven. I even use the Frog to teach my daughter how to drive rc.
The remaining cars in my collection are re releases. I get the look of old, but not the price.
I do have one weakness. I own every Wheely new release to include the land cruiser and dump truck 4x4 version, except for the tumbling bull and Honda turbo, haven't got those in hand yet.