Really?? You own a Garmin handheld in the past 5 years? 6xx software is refined and already has fewer bugs than some models on the market for years now.
And if you're looking for objective reviews you're in the right place. There aren't too many suck-up fanboys around here, mostly grumpy old Garmin users just waiting to bash them over the head at any sign of deficiency.
My 600 is proving a worthy replacement for my 60CSx. The only issue I have had is it locked up on me when I tried to access a camera related setting...But other than that the firmware is very stable for a new device.
Garmins OS Discoverer mapping still isn't as sharp as the OS mapping on a smartphone using Viewranger but the screen is very readable in bright sunlight so I can forgive them for that.