My current serve in a XP DS1015.
I believe that this is a digital servevo..
To obtain full benefit of M11x, MT4, 4PLs, should I consider to have new servo?

I was new for this hobby a year ago when I purchased my current setup(TC6, Tekin RSPro, 13.5 and DS1015), I just followed a recommendation of the Hobby shop. Then I really got into this hobby and learnt a lot(Like I should have got 17.5 motor first, Did not need RS pro for blink race, etc).

Now my TC 6 has RS pro +17.5 and Myself started to lap without crashing. I do not have any issue with Spektram DX2S except I sometime encounter interferance when the track is really busy requires re-binding.

I do not think my stearing is pro-level fast demanding fast, but my birthday is coming up so I may have once a year opportunity to overcome toughest negotiation with my only race team sponsor(Company called W.I.F.E inc)