I thought the routing issues detailed by DCR were put down to his testing being in Amsterdam, as he lives there - and it happens to probably have more cycling infra than anywhere.  Seems this confused the routing a bit.  I have always had Garmins but not without issues, especially when it comes to warranty / service problems.  I moved to Wahoo Elemnt Bolt 2 in the Spring and like it.  No problems so far with routing or anything really.  Definitely less issues and easier to use than Garmin - that's my view anyway but this will always be someone saying how Garmin is king and then nest person will sing the praises of Wahoo.  Anecdotal evidence, really.