Yes really! I can't speak for all 1200s but mine are definitely not rough sounding. Mine are early MK2 units likely from the late 70s or early 80s, the construction differs from later units I have seen. They are more robust.
In the end I modded the original arm. I replaced the S arm with a carbon fibre straight tube. The results is quite good. I had some friends over a few days ago listening and they were very impressed with the result. you can check my system for some pics.
As to the comment regarding upgrading the phono stage and cartridge. I had already done this, I am using, ARC SP16, with HO Benz Glider and this has been one of the most beneficial upgrades for my system.
I am still interested in trying the SME arm but there is currently no budget for it.