IMHO both will cover 4x5 though without much wiggle room. Both are very nice lenses for what they are (and they are both quite sharp and well corrected for color!) My uncoated wartime production 127 Ektar is a keeper. I had a 127 Ysaron and gave it to a friend, then I bought a second 127 Ysaron just for the shutter so I'll have something in which to mount the $40 270mm G Claron I'll win on ebay some day in the future
Keep in mind that the 127 Ektar was used primarily on press cameras like Speed Graphics which were usually shot handheld, so the ability of any usable movements were really a non-issue.
If what you want is a cheap lens, both the Ektar and Ysaron are excellent if availability of movements aren't an issue. OTOH if you want movements there are plenty of lenses going for not much more that will give you much greater satisfaction. I'd recommend checking out a 120 Angulon.