I use the BOSS BR-800 to record electric guitar, acoustic guitar and vocals.

It works a treat because it has dedicated COSM models for all of these, as well as a handy GUITARTOBASS patch, and I can direct monitor everything with zero latency into my DAW. Then mixdown solely in the DAW. It's the best of both worlds.

Thing is though, it's getting a bit long in the tooth, and also noisy.

Does anyone know of another USB interface that can achieve what the BOSS achieves?
Zoom R line (R8 and up), you can just get one of the new Boss processors, they are USB combatible audio interfaces.
The desktop GT-001 or the GT-100 which is more robust if playing live, or one of their new guitar synth processors which also have the brains of the GT-001 effects in there and could record via USB AFAIK.