I am enjoying my analog system, but what can I do to improve?

Dear @qwin  : The OP TT is way superior to the one you own, starting but the DD motor and tonearm magnesium build material. Both looks similar but that's all, are way different .

R.

@rauliruegas 

You've been reading the marketing hype.

The SL-1200 Mk II and SL-1200G are remarkably similar in performance, my source is Technics own spec sheets and in some areas the MkII measures better.

For most comparisons performance can be classed as the same.

Dear @qwin  : Unfortunatelly specs sheets don't " sounds " by it self.

The new Technics motor is a total departure from what Technics did it  in the past including the SP-10MK3. The new motor is coreless design and this improves the quality performance as it does the magnesium used in the tonearm arm wand.

Again, different " looks like " TTs.

R.

@rauliruegas 

I can appreciate there are differences in the motors, the start up torque is higher on the new one, but start up time is exactly the same. Basic speed stability, wow and flutter is no better (worse). The literature talks about cogging, everyone knows this was marketing hype by the belt drive brigade to try and undermine specs they couldn't compete with, when DD first appeared. Technics seem to have jumped on this as a way of promoting the new motor. But basic common sense tells you, they could not achieve such high levels of speed stability and wow/flutter figures if cogging was real thing. As for the arm, they changed from one alloy to another for the tube, same plastic yoke and crude fixing method, whoopy do.
Sorry, we'll just have to disagree on this, for me the price tag is just way to high and the attempts to talk up the spec just don't stand scrutiny.
Its a good deck, always was, but you soon hit a performance ceiling when trying to upgrade and you need to jump ship to improve further.
All my opinion of course, but that's what was asked for.

I'm sure the OP will take all opinions into account and make his own mind up.

This is off track from the question of how he can improve what he has.

qwin, I cannot comment on differences in sound quality between an SL1200 Mk2 and the 1200G series, but do bear in mind that there are several variants of the G series, to include the G, GR, GAE, and lord knows what else, and that the low end of the line costs around $1700, not by any means a high price for a very fine turntable. Furthermore, the build quality of the G series is just much higher than that of the SL1200 Mk2 and its siblings. The motor is completely different; it is a coreless motor of much higher quality than that of the original. Coreless motors have much lower propensity for cogging or have no cogging, depending upon who builds it and how its built. (But I am not claiming that the SL1200 Mk2 has an audible problem with cogging. Like you, I doubt that it does.) The chassis and platter of the G series is also sturdier and much better damped than that of the SL1200 series. So, you are free to hold any opinion about how one sounds vs the other, but there are important upgrades in the G series that are not trivial. In my opinion, it was a bad marketing decision for Technics to make the G series look so much like the SL1200 series, if for no other reason than that it promotes the delusion that the two turntables must be similar in performance, specs notwithstanding.