Dig-on, I did the same as you since I had a gift card for Dick's and I couldn't think of anything better to use it on. I got the Vanquish 340 since I didn't need the 440 or 540, (I have a Nox 600 and 800 already).
I am extremely impressed with the 340. It will make an excellent grab and go, travel and beach detector for shallow to 8" turf hunting and beach hunting. It will go much deeper but with less accurate target ID. It feels light weight and well balanced on the arm, is very adjustable for big and small people, has enough features to easily identify ferrous from non-ferrous and has the ability to completely ignore some iron and very low number aluminum trash targets while allowing good coin and jewelry targets to audibly stand out well. It does not have quite as good target separation and recovery speed as the Equinox (or the features of course) but it gets the job done for obvious good targets in the surface to 8" range with solid tones and solid numerical target IDs thanks to its Equinox-like Multi IQ system. And, it is a lot of fun to use!!!!
Jeff