The past year I’ve been using my HX Stomp for the guitar interface and recently discovered some issues with that. To be honest it’s not a good guitar interface for recording.
How is that? I mean, yes, the interface latency is downright horrible, but once you're monitoring through the hardware (as in using it's internal sounds), the recorded tracks are pretty excellent IMO (regardless of whether you actually record the sounds you're monitoring with or the DI output for later abuse).
Fwiw, I'm using a Motu M2, which is kinda excellent (lowest latency in its price range), but there's 2.5 drawbacks:
1) Latency isn't reported to the host properly (it's off by 1ms), causing a record offset. I decided to accept it (even if if I find it inacceptable of Motu to not adress this) as Logic allows me to set a global recording offset to compensate.
2) There's no onboard mixer at all. Which means that in case you're using the direct monitoring function, the mix of input and playback will be depending on your recording level. As I'm dealing with splitted input signals 95% of all times anyway, I work around this by using one channel for direct monitoring, the other for the actual recording. Still less than ideal.
2.5) When using direct monitoring, the overall output level is attenuated by some dBs. Not much but enough for me to have to readjust the monitoring level here and there. According to Motu's support, this is intentional - I call it intentionally stupid.
Otherwise, the interface performs well and the sounds I'm getting from HX Native are pretty much identical to what I'm getting from the HX Stomp (minus the variable input impedance of course).
If money is no objection, I'd go for an RME Babyface all day long. Lowest latency, most excellent drivers, all connectivity options you may need in a home studio environment, best support ever.
