Ok - I was looking at some numbers. The three first baseman of the 20's-30's were Gehrig - Foxx - Greenberg Gehrig has the best overall numbers but you couldn't go wrong with any of them. Foxx gives you a little more versatility. But I was struck by the 1936 MVP voting.
Hal Trosky finished 10th with a year of 124 runs 162 rbi 45-9-42 xtra base hits .343 bavg .644 slg 1.026 ops and 146 ops plus.
I don't know why we worry about the steroid era. I guess it was the water back then.
If you want a good answer to your question, I think you should ask a fuller or more questions. Like, is this for real MLB or for fantasy? If fantasy, would this be keeper or single season? Just because we are not talking about the cream of the 1b crop, it will help you withnbetter responses if you make this clear.