Sadly my audio interface for the past 7 years is on its last legs. I have been using focusrite scarlet 2nd gen solo and have been happy using it. I primarily record ONLY guitar with Reaper DAW software amp simes (mercuriall ampbox, bogren digital ampknob, ml sound labs, line 6 helix native, audio assault amp locker etc.) With Toontrack ez drummer III with modern metal expansion and ez bass. Should i just get the new focusrite scarlet 4th gen SOLO or UAD volt. For my needs i dont need any additional input or output. Just 1x guitar input and to my Apple Imac and my Ik multimedia Ilouds. Please advise. Thank you.