The 620 is the next step up from the 220 and more expensive again. A very nice and light touchscreen watch but you’re paying for loads of extra features that you may not need. My favourites are (1) it downloads the next 7 days of GPS satellite locations so is ready to go within 2-3 seconds of turning on and (2) it automatically uploads via either wifi or Bluetooth when you finish your run so it’s immediately on garmin connect and strava.
If you get the 405 per Moody’s suggestion, make sure you get the plastic backed one and not the older metal backed one which turns your wrist green.