Just found this forum and thought I'd add my two cents. I've been out of this industry for a number of years, but had a front row seat for most of the 80's and 90's. To the best of my knowledge, this is the UCS/FDCS/Reynolds cliff notes.
UCS was founded in the 70's, I believe, by Bob Brockman. It is a privately held company, and their specialty was mostly mega-dealers and dealer groups. All green screen, mainframe stuff, much run out of their Houston office. At their zenith I think they had something like 1000 clients. The market consensus was that the UCS software (now called "Power") was powerful and flexible, but expensive, and UCS as a company was difficult to deal with.
In the early 90's (1992?), Ford decided to get out of the DMS business and sold their Dealer Computer Services operation off to UCS. It was run as (very nominally) separate operation called Ford Dealer Computer Services (UCS got to use the Ford name). As Ford dealers learned the hard way what doing business with UCS was like, the installed base steadily shrunk. until they were about the same size as when the DCS operation was first acquired. Along they way, UCS lost the rights to use the Ford name and logo.
Fast forward to 2006(?) - Brockman worked a deal that was deceptively labeled as a "merger" between UCS and Reynolds, when in reality it was a leveraged buyout. Very good for the stockholders as Brockman and his investors paid a big premium for the outstanding stock, I think it was $40 a share when market value was something in the $28 range. R&R is now just a name, the company is owned and operated by Brockman and his top 6 or 7 lieutenants. All decisions are made by Brockman, nothing gets done without his approval. The UCS philosophy seems to be that the company (aka Bob) should make as much profit as possible from each customer - there are comments to that effect on a number of different websites. To that end, Dayton has seen a steady turnover in the workforce with legacy R&R employees (ie higher cost resources) being let go, and the positions backfilled with new hires if at all. They like to lock dealers into restrictive, long-term contracts, *everything* has a price, and 3rd party access to the system is extremely limited. Essentially, if the dealer wants to do X, they need to use our system; if we don't do X, they don't need to do it (I've read comments that effect on other community sites)
This approach has made Mr. Brockman a very wealthy man, however, it does not sit well with many dealers and there has been a fairly steady exodus from R&R to other DMS providers over the past 4 years; I've seen reports that one of the other DMS operations has Brockman's picture on the wall labeled as their "Salesman of the Year". My personal opinion is that R&R will be milked of any value until the remains of the company will be roughly the same size as the "old" UCS. Very similar trajectory as the FDCS deal.
As always, your mileage may vary. If you are interested in a Reynolds (nee UCS) system, I'd recommend speaking to current and if possible former clients to get their opinions and insight.
Good luck.