SPEICHER,
Honestly I don't think most people would notice any difference.

For example, during a weekend of chopping.. an SR-77 Dog Father will outchop an Infi CGFBM (.25" thick model) due to the Res-C handle alone!
Ok.. over many Months of hard chopping.. the Infi user may notice an advantage in edge retention & corrosion resistance.

Andy Wayne over here has done Serious chopping with his SR-101 choppers.
I wouldn't get too hung up over any of the Busse steels.
Personally.. comfort/feel in hand, availability, & price are more important considerations to me.

JYD #5 "If you don't buy one now, you'll just kick yourself later.." -Karnack