The El-Omegar is a low end lens, but no worse than many other simpler designs. You can certainly make good prints with it. That depends way more on technique than the lens. Have you ever heard a photographer say, "Oh, what a crap print. It would have been way better if I had a better enlarging lens."? I've made many a decent medium format print on lenses I'd be too embarrassed to name. Use the optimum aperture, watch out for negative pop and use a decent grain focuser. And when you do stumble onto that great condition lens, try not to be too disappointed when the prints are nearly indistinguishable without a magnifying glass.