I picked up a SRT BH6027 after my DS1015 broke (well, pot came loose, I fixed it now but impulse-ordered a new servo at the track) and I'm not really impressed. I have a PowerHD R12 in one of my and was really impressed by it, incredibly fast just like the specs state, so I believed SRT's specs (same OEM after all) and ordered this one even though I could barely find any info on it otherwise. Quite glad I didn't pay extra for the full alu case version.
According to the specs the BH6027 should be a tiny bit faster than the DS1015 @6V (I still have one DS1015 for throttle, so the system's running on an unregulated 2s LiFe for now) and well, it's not. It feels lazy in comparison, it's still likely more than fast enough for a 8th scale steering servo for me considering the DS1015 felt a bit twitchy but the specs simply don't line up. Either the DS1015 specs are understated, or SRT's are overstated. I might spend some time later to test which is the case, but as it stands right now, even the JX CLS6322HV is years ahead of the BH6027 in terms of speed and not that far behind in terms of strength (the latter at least according to specs). One point for the SRT though, it's quiet when it's centered/not moving and definitely has very low power draw, my voltage barely drops when I do the "death wiggle" with it, while almost (the PowerHD R12 doesn't) all the coreless servos I have really suck up the juice when doing that.