GPS units

That thing is awesome, but how much does a satellite phone network subscription cost?

I'm going to be lazy and avoid trying to sift through the 20 pages here..

Has anyone used an Edge 800 (or similar bicycle specific GPS) to navigate in the berg? It's listed as a compatible device for the latest topo rec maps from Garmin.

Hi I am planning on buying the garmin etrex 22x to use as my gps but does any one perhaps have any other good suggestions that can also be used

Here's what I use/have used and my personal experience and opinion. Others may differ.

Smaller is better
Lighter is better
Longer battery life is better
External antennae is better
Buttons are better than touch screen.

Touch screen becomes more unresponsive when it gets colder. My Montana touch screen device is heavy, big and has a touch screen. Difficult to get it to work in the cold and forget about using it with thick gloves. No such problems with a GPS with push buttons. Also, in rain I've wiped icons off the screen when trying to wipe water drops off the screen. Super annoying when your'e lost in the rain and freezing cold, and now you have to figure out how to get your icons back on the screen.

External antennae is best. My wife has a Garmap 64S (pushbutton, smaller colour screen, long battery life) and this is our go-to navigation device when we are feeling lost (note: we are never lost, we are just temporarily disorientated )

I also use my Fenix 6 and my wife uses her Suunto 9, both are ok for navigation but I've found that the altitude readings on these GPS watches are not very accurate. On our previous trip in the Didima area, we had about a 70m asl difference between the Suunto, 2 Fenix 6's and a Fenix 3 watch. This may not sound like much - until you are trying to find a cave in the dark, mist or rain and you have little visibility.

I use Free GAIA App.
With everything, there are PROS and CONS, some of them below:

PROS
Free
Also - its free
no need to buy new device cause its free
if you have decent phone, you dont need a camera and GPS, they are one item
they work only in GPS and thus battery life is awesome on phone (i leave my phone on airplane mode and this no messages and internet access - be in the wild)
screen is bright and responsive
TONS of features and routes worldwide (i love the pin drop to track progress)
no need to download anything and have any Garmin related access

CONS
you have a phone on you.

I agree with @Riaang regarding what to look for. I am still using a very old Etrex Legend Cx because it has physical buttons and around 36 hours on lithium batteries. I bought a touchscreen GPS which I sold as the touchscreen did not work for me properly in winter in the Berg.
The Etrex 22x has physical buttons as well as the touchscreen so should be good to go. If you can squeeze it into the budget the 32x is a better unit as it has an altimeter which is super useful in the Berg - GPS altitude is notoriously poor.