Well, there's a certain amount of "you get what you pay for" - high end converters that
capture and reveal the pristine detail have a price tag to match... MOTU aren't in the
high-end bracket, but they're perfectly fine workmanlike interfaces and get the job done
nicely. And besides, without a well-treated room and very good monitors you might not hear
much of a difference anyway
I have the 828 MkII and have no complaints (aside from the LCD backlight that died) -
given that you don't want to spend a fortune and can probably get a MkII for a bargain now
that the MkIII is out, I'd say it'll give you exactly what you're looking for.