I've built the gpcb zenith pro which allows you to mod the hell out of it e.g customise the clipping section and add extra gain to the output buffer stage etc. the idea being it lets you customise it to your liking and the bonus being you learn a whole lot about the circuit.
Unfortunately I never completed my planned mod life got in the way! but there were a couple of mods posted for the circuit a transparent T style dumbly mod and a Marshall silver jubilee mod
From my notes as well as the 4558 here's what I tried
OPA2604
TL072
TL082
LM358
LM1458N
The biggest difference I noticed was to do with noise at high gain with the main culprit being the LM358 or it could have been my soldering!
To my ears the best were the OPA2604, TL082, TL072 and LM1458N in that order although I never noted the changes I made to the circuit I did change a few resistor values and used the IRF520, BS170 and 2N7000 in the clipping section.
I liked the IRF520 the best, I was going for a cleaner tube type sound to give me a bit of a jangle which I achieved but as I say never noted the resistor values I changed (doh!) and as already mentioned I too went with what felt right and sounded nice to me.
Anyway I hope this is of some use I should add that I never looked at any datasheets to see if there were any differences in slew rate, bandwidth etc. I'm a kinda stick it in and strum type guy!
Here's a list for easy dual op amp selection to try
http://www.talkingelectronics.com/ChipDataEbook-1d/html/OpAmpList.html