I went on a bit of a £300 DAC quest last year.
I've amassed the following DACs (!):
(original) MF V-DAC + V-PSU: (+) very good separation of instruments/soundstage, airy and detailed, (-) sound lacks a little body compared to any good (even old) CDP, music seems a bit "slow"(?!!) and occasionally has a touch of digital glare in the high frequencies.
Audio gd NFB-2: (+) good soundstage and very detailed, more body and more realistic tone, very smooth with no harshness, with upsampled 24/96 via the Macmini+V-Link it's close to hi-end CD players except for being (-) a touch "polite" (i.e. lacking in dynamics)
15 year old Sugden: just sounds alive, much better in every way. Hard to find a (-)...maybe soundstage with a jittery/noisy source? This DAC is hard to find and has no USB or hi-res capability--but anyway I'd suggest a good USB converter and stick to 16/44.
For fun, I've just listened to all 3 play Nirvana's About a Girl (it just happened to be playing) FLAC via Foobar KS/co-ax from PC soundcard.
V-DAC+PSU: thin and weedy, vocals are half OK but the hi-hats seem louder than the guitars--pretty unconvincing on this track
NFB-2: much better, at least the guitars sound like guitars i.e. dirty
Sugden: additionally, you feel the angst in Kurt Cobain's voice and the drums and bass have more of a kick.
And all this is through my second (or third?) very cheap and old system: Kenwood KA2030 SE amp, JPW Sonata speaks...
This is probably not helpful...so to try to summarize: if you're fussy about your source like me I doubt you'll find a good new DAC for £2-300, if you're not so fussy, any of them will be OK and sound similar.