Does anyone have any experience with a Sutherland Little Loco?

I would love to hear some thoughts on this item too.

That is a current injection type circuit . With the right type of LOMC low internal impedance cartridges they are stunning . I have the BMC MCC1
There are other ones on the market as well . Chanel D audio LINO C , AQUVOX , CH precision , MR labs Vera 20 & Avari Audio CI 

I got the Little Loco a couple of weeks ago after speaking with Ron Sutherland on the phone about what cartridges and system I have. It replaced a Pass Labs Aleph Ono (circa 1998). I have used it with an Ortofon Rondo Red (.5mv output, 6 ohms) and an Audiotechnica ART-9 (.5mv, 12 ohms). Both sound very good but the ART-9 sounds much better (as it did with the Pass).
Remember, no loading with this stage because it is a transimpedance stage so no need. 

Compared to the Pass the Little Loco is levels better. Wider, higher, deeper soundstage, separation of instruments is much better, just a more natural, more 3D presentation. Not cheap but money well spent IMO.

I wish there were a list of recommended cartridges for these types of stages, I'd start experimenting