Rick is right about the inspection(s), and that condition is king... always. In general, it would seem that the much younger piano with the much lower price might be the much better value. As a rule of thumb (and condition is king), for a good piano which has had reasonable care and a moderate amount of play, we think of them as having about 50 years of musically useful life before they begin to require some rather expensive refurbishment. But there is a market segment which prizes aging pianos which can still be plunked (I was one such), for very little money. The fact that you mention only pianos by the rather uncommon maker, Charles Walter, is interesting. It is not well known among piano shoppers--- how did you happen upon two? Guardian angel?
But, it is not a good deal if you don't like the piano once you get it home. And with the Walters, they basically have two flavors of uprights: plain, for less money, and fancy, for more. Same piano inside. I happen to prefer the plain, but no one comes to me for interior design advice. If you were ordering from the factory, there are two different keyboards you might have ordered. Stock is a Chinese-made Langer type action; many find it just suits them. Or, for another 2 grand, a much nicer one (some think) by German maker, Renner.
In your case, that is so many smoke rings up on the ceiling. So, do they play well? look well? Can you find out how much they have been played, how much professional care they have had, and where they have been domiciled? A piano school, a church, or a nightclub auger less well than a private residence, climate-controlled, for a student who tired of lessons, left for college, and never looked back. Perhaps the parents are moving to assisted living; perhaps it will mean something to them that the piano is going to someone who will play it and love it.
CW enjoyed a nearly blemishless reputation for many years. Last time I heard about it, there had been a few problems getting service for recently-made models. For a 20- or 30-something piano, it will hardly matter.
I loved them for their big voice (for that size piano) and the full-piano-width music desk. The design was innovative, and made use of every possible inch to get the longest string length. At the same time, the profile was modest; a friendly size that would not frighten the life out of a child.
If you don't know any piano technicians in your area who are qualified to inspect a piano for condition, estimate the cost of service to put it in tip-top playing shape, and appraise its fair local market value (and, perhaps, refer you to a good piano moving company), you might try http://ptg.org
Piano Technicians Guild.
Best of luck to you, Chicago-BK in your search! Write back and let us know how it goes, we love piano search stories.
PS- Charles Walter also makes two models of grand pianos. If you are looking at stores which carry new CW uprights, seeking to play them in order to give you perspective on how the older models compare, try out the grands. The ones I have seen were lovely pieces of workmanship, aiming for a size and volume of voice which would fit more comfortably into most homes.