I commuted for many thousands of happy miles on a Trek 1000.

The 1.1 is a newer version, and the 1.2 has slightly better components.

Mine took full fenders and a rear rack just fine, but when loaded with more than 30 pounds or so in back, the tail sort of wags the dog. Just fine for commuting. Grocery-getting was the problem.

When choosing between the ones above, the 54 is probably too small. The 58 might be a smidge big, but workable. Otherwise, give extra points for puncture-resistant tires. If none of them are so equipped, make them your first upgrade. Nothing says "loser" quite like being late for work because you had a flat.