Having owned both types of Remington I would recommend a used Wingmaster over a new Express.
The finish on the Express is crap. It is some type of porous sprayed on paint, and if you hunt near salt water it WILL rust. It seem the salt gets under the finish and causes corrosion, sometimes in hours. The same does not happen to a Wingmaster, as the blued finish does not seem to retain the salt.
I have nothing against matt blued guns and parkerized is fine too, but the Express finish is neither. Unfortunately Remington uses this same finish on the 11/87 Special Purpose (at least it was on the ones I saw) and that kept me from buying one of those.
Another "sometimes" fault with the Express when compared to the Wingmaster is smoothness and reliability. Wingmasters have been uniformly reliable and smooth out of the box. Expresses take a bit of "wearing in" to get smoothed out. I had one express that would jam every now and then (probably two shots out of one hundred) and I know of several others that did the same thing. I currently have an Express Slug gun that has been 100 reliable, but be aware that there are some out there that hang up every so often.
The heart of both guns is the same, but extra fit and finish pay off - the Wingmaster is the better gun. If I were on a budget and could not afford a new Wingmaster I would consider a Mossberg 500. Blasphemy? Perhaps, but the Mossberg works, and is cheap to buy and has s slicker action than the Express. I used to crap on Mossberg 500’s until I got one.