Difference in steel frame material
I'm looking at getting a new bike for commuting and winter riding. I'm thinking of a steel bike. What are the differences in quality of the diffent type of steel? Most of the bikes I'm looking at are entry level bikes with frame materials of 4130, Reynolds 520, Tange, and some seem to be house brands such as Masi. I'm looking in the $900 - $1200 for a complete bike or about $400-$500 for a frame.
I looked through some old post comparing Columbus to Tange but that was for bikes from the 1980s
For what it's worth I have a 1988 Giant Sedona CroMoly Quad Butted frame that I'm using now.