Can't say I've heard either, though the impression I've been given from reviews is that they're both quite upfront in their presentation style.
Other potential options (most of which are now available s/h at sensible prices):
- Chord DAC64. Very highly regarded since it's launch. Meant to give a very "warts and all" presentation, i.e. detailed, and a little analytical, but very good at what it does.
- Meridian 500/600 DACs. More rounded style of presentation than anything mentioned so far. IMO a little electronic at times.
- N OS DACs. Heard three variations of these now. VERY natural sounding in their presentation (more so than any other DAC I've heard). Little lacking in detail when compared to some better DACs. I didn't like the variants using Ops amps, again rather electronic. The 1543 versions I've heard were great, though the frequency extremes can be a little soggy without a decent external PSU. Usually very cheap, even with a decent add on PSU. Excellent value for money.
- Wadia DACs. Have only heard one of these. BIG sound, with massive stability. Not the most exciting, but great with some types of music.
- Bel Canto DAC2. As I've bought one of these, guess that's a vote of confidence. Nearly as natural as the best N OS DACs I've heard, but with better detail and a wonderfully wide and well resolved soundstage. More relaxed than say a Meridian unit, and definitely more so than the Cyrus unit.
- Behringer 2496. Bit of a joker in the pack. Dirt cheap to buy and IMO not as natural or as detailed as say a Bel Canto DAC2. Having said that, it does have room correction facility (similar in concept to the TACT units, but much cheaper). The impression I get is that the room correction facility "may" be so useful that it offsets it's slight lack of absolute fidelity if you have a poor listening room.
I'd suggest you listen to a few more and think about how well they'll integrate with your existing system before paying out the cash.