This is actually my first seven string and I like the DIY aspect a lot so I decided to go 2nd hand and upgrade from there. I found this very good condition GRG7221QA-TKS on ebay from 2019 with a new zealand pine fretboard which is almost black which I really like, usually the fretboard is out of purpleheart. I replaced the nut with a black tusq xl and installed hipshot locking tuners which I also found on ebay. I did file the nut a bit since I use 11-56 gauges with a 68 at the bottom for drop G# on a 25.5" scale. I mostly play progressive metalcore and use neural dsp's archetype: gojira plugin with the included oct pedal to drop 1 or 2 octaves lower if I want to drop F#. I installed seymor duncan nazgul/sentient PUs which I bought new from my local music store and did a lot of fretwork (leveling, sanding etc.) Really happy now with the setup it plays super well and sounds exceptional! For a total of 470€ for all the parts + guitar I'm very pleased with this axe.