Custom Lenco L75 vs Technics 1200's

Good that you like the way your Lenco sounds, but a proper motor controller will dramatically enhance speed stability, which you are not monitoring, and that effect I have found to be extremely audible and beneficial, on at least two occasions and in both cases with TTs that I thought were performing well before adding a motor controller.  The Phoenix Engineering gear is no longer manufactured, but you might keep an eye out for a pre-owned example. As Pindac intimated, there may be good ones endorsed by the guys at Lenco Heaven, too. (I am a member but do not keep up with the threads.) And yes, you cannot go wrong by adding a 1300G; I was only saying that it would not necessarily outperform a good Lenco with motor control.

+1 motor controllers can cause a surprising improvement. I use a Walker Precision Motor Controller, Nottingham Analogue Wave Mechanic and SOTA Electronic Flywheel over different systems and can recommend each of them. 

If I were to spend my money again, especially with what I have settled with today.

I would not purchase a Speed Controller for an Idler Drive TT if I were considering a second TT, especially a DD TT from the likes of Technics.

When considering the brand Technics, there are models that cost near the price of a Speed Controller purpose-produced for an Idler Drive, and other commonly referred to models are surpassing the Speed Controller's price by up to 100%.

My strong suggestion is to fulfil the ambition to experience the Technics 1300G, but only fully commit to the purchase after having received a demo of it in use. This will give a good guide to the new experience being pursued and keep $2K+ in your coffers for an extended period when the early learning is occurring.

What can one learn from listening to a TT in isolation operating in an unfamiliar system? I’d say “nothing”, except that the platter is not wildly off speed. Sure, if you can borrow a G to audition at home, that might be worthwhile. Just scratch your itch, if you feel that he need.

LOL, +1.