Hydrogen Audio guide for EAC seems to be most current. It's in the links section at EAC. What's puzzling
is the following in the LAME section of H A: "The rule of thumb when considering encoding options: at a given bitrate, VBR is higher quality than ABR, which is higher quality than CBR (VBR > ABR > CBR in terms of quality). The exception to this is when you choose the highest possible CBR bitrate, which is 320 kbps (-b 320 = --alt-preset insane), but this produces the largest filesizes for doubtful audible benefit"
Doesn't seem logical if talking about quality.