I got the 340 from the same place as basstrackerman. I already have a Nox 600 so didn't need the 540.
The 340 really is like an super simple entry level Equinox with Multi IQ, volume control, sensitivity, three modes: no targets rejected, iron rejected and small foil rejected, 3 tones, virtually the same numerical target IDs as the Nox, battery level, depth meter and automatic noise cancel/ground balance and the V10 10X7" coil.
It works very well, goes plenty deep (8" with great ID and 12" with jumpy ID), runs quiet and feels very nice on the arm since it is lightweight and both the arm cuff shaft and coil shaft are highly adjustable.
Well worth the money for a grab and go, loaner or for the kids and grand kids. It is way better than the Go-Finds and detects better even at this level than the XT 305 and 505.
Jeff