You really need to have a long think about what features you want.
I have an Oregon, and also a (not made any more) 60CSx.
The Oregon screen is nice and big, but the touch screen controls are not ideal. They get "touched" by raindrops while riding and when in your pocket if you don't remember to disable it. The screen is glass too, and while it's tough, it's not unbreakable. (Trust me, I know).
The 60CSx (and its successors like the GPSMAP 64) are bigger, incredibly tough and resilient to stupid levels of abuse (again, trust me) but the screen is a bit smaller. They also have much better battery life than the Oregon (probably because of that big screen on the Oregon).
Both of the above are powered by AA's which means you'll never get caught out with a flat battery and nowhere to charge it, provided you have some spare AAs with you.
Both of these you can use with (free) OSM maps or (slightly better quality but much more expensive) OS mapping.
That's from my direct experience. Etrexes are cheaper, and have their fans. I've never owned one. Bike specific ones are smaller, more bikey, and require a charger to recharge them so you need to take a power bank with you for when it runs flat. They tend to have more compatibility with bike sensors (I know, for instance that the Oregon is not compatible with all the latest Garmin speed/cadence sensors)
It really depends what features you are after and what your budget is.
As to reliability, I've owned Garmins since the GPSMAP 70 (still have it; it still works) in the early 2000s No problems at all.