Thanks for your opinions, is there a general concensus on MM cartridges that match up well with the technics tonearm and the more popular kab mods?
With the fluid damper, it seems that some medium compliance high-output MC cartridges work well.
I can attest that the Denon DL-160 on a Sumiko headshell works very well. There's an A-goner here who also has a Technics and has headshells mounted with the Denon DL-110 and a Sumiko--I can't remember if it's the Blue Point #2 or the BPS EVO III. Anyway, you could probably take this route up to at least the Blackbird (but I'm speculating based on my Denon experience).
Another route would be to get an Ortofon Concorde integrated cart/shell from KAB with an OM30 or OM40 stylus. This also eliminates one screw-down joint between the stylus and the tonearm. This approach is widely reviewed and highly recommended by the reviewers (TNT, Sensible Sound).
I have also heard (from an online audio reviewer deeply into LP reproduction) that the new Ortofon 2M (moving magnet) series is a *great* match with the SL1200. For the money you're talking, you might want to go all the way to the 2M Black with Shibata stylus.