can't really speak for the usb mics but since you already have an interface with phantom power it seems a standard condenser mic would make sense. i have the behringer c1 & you can't really beat it for the price.
USB mics in general have no or limited gain settings. That's fine for recording voices in a quiet surrounding, but far from ideal for songs and/or instruments. If you already have an interface, I'd go for a standard XLR connected mic every time.
And they have spoken :) Thanks for the feedback everyone - as always, appreciate the prompt responses. Thinking about what you all said, it makes sense to go xlr through my interface. Have a great day everybody!