I moved from a Clearaudio Concept to a SL1200GR because of it's removable headshell. I thought it would be a lateral move sound quality wise, but it wasn't, the direct drive Technics sound floor is more quiet and the speed is always dead on.
Other pluses for the SL1200 is the included cartridge alignment tool makes set up easy, you can change the anti-skate on the fly, the VTA (Vertical Tracking Angle) is also easy to change and accessible.
I started with an AT VM540ml on mine, it's an excellent lower cost MM cartridge.