I have been using an RME Fireface FireWire for many year but it was really beginning to struggle - due to lockdown here in Cape Town I didn't have much choice for a replacement, but as I wanted to go USB 3, I went Zoom UAC8
The pre amps are not as good as the RME without doubt, but as I always use some kind of pre amp or mixer, this didn't really matter so much to me. The latency is very good indeed and has made a big difference to my set up - a very good price as well.
So far operation has been solid as a rock and I am very happy so far