I've been swinging the same AT pro going on 7 years now. Not long ago I pulled up a merc (first one in a while) and showed my father that weekend. He decided he wants to start detecting now and the ace 400 is what I ended up talking him into getting...
All of that being said I know they are similar but anyone have any tips or tricks on this 400, settings etc? I seem to struggle to find VDI charts on this model even though I know they are close to the AT.