Best MC step up transformer


I am trying to find the MC transformer for my system. Now I am using Koetsu Urushi + Audio Research Phono Ref 1 with Jensen inside. The sound is pretty good but as always I wanna make it better. I've tryed to use old Koetsu MC step up trans but was unhappy about it. The sound was dull, not clear. When I've looked through ebay and audiogon, I've recognized that they are a lot of unknown for me variants (from 6k$ kondo to 100-200 $). Could you advise the best variant from quality/price point of view ?
shmelev_dm
I have the Bob's Devices flagship SUT... It's $1200 and results have been dramatic! See my review posted here (link below).
If you're on a budget then the Hagerman Piccolo is hard to bear, but it's not a transformer. It's a head amp using op-amps to boost the signal.

Have you seen Dave Slagle's transformers? Very nice. Custom wound to match your cartridge.
I use a Raphaelite PM 1.1. I bought it through Pacific valve, and although they no longer carry it they might be able to get you one. About $600, and phenomenal in performance. It will give you a deeper bass response than most solid state MC stages.
Any SUT delivered without a Data Sheet about it specs is wasted money (Most have no sheet or they are wrong), I would give any SUT to an external Lab for an independent check ... I saw so many where the Tech scratched his head and asked me "Paid more than $50,--??