Nothing wrong with Presonus - almost all the interfaces (esp. on the lower end) sound about the same. There is only so much you can do component-wise with a preamp that costs $10-15. And they usually use the same ADDAs. Basically, the same price range of interfaces will sound about the same.
I'm using the Tascam UH-7000. Stellar performance sound wise w/ a few flaws - higher latency over USB (11 ms roundtrip), no inserts etc. But the preamps and conversion are good enough Tascam put the retail price at $700, just like some of the other "premium" units that have come out the last few years - audient, crimson, etc. But it had none of the extra features so they go for $400 now. I've got mine spdif'ed into my TC Konnekt (no sonic slouch itself) as the main recording channel, getting around the higher latency.
Tascam is now, of course, in the Gibson family, so you should look at their interfaces. They have new models out, not quite as good as the 7000, but with multiple ins/outs. And brand new is their 20X20 w/ ADAT and Spdif as well as 8 preamps with AD but 8 outputs. Craig Anderton loves the sound and I should be getting the 20X20 in soon for review. It is not out but lists for $500 I believe. It could be a winner.
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