Garmin Montana 700 quality

I own a Oregon 450T which is getting old. Screen has a few blank pixel. I need to replace it.
I'm also getting old so I think a bigger screen would help

I'm considering buying the Montana 700 and load OSM topomaps

Code:

freizeitkarte-osm.de/garmin/en/

which I already use with the Oregon 450. My main use is hiking and all kind of outdoor activity.

I have a few questions:
1) Is the Montana 700 screen as readable as the Oregon 450 under heavy sun?
2) Will OSM based maps work correctly? (The maps I use with my Oregon and Nüvi 2789)
3) Can it handle GPX tracks (Made with BaseCamp or downloaded from Wikiloc.com or AllTrails.com) ?
4) Can I record GPX tracks while hiking?
5) Is the Montana very reliable?

Another way asking for the same quastions is: "Does Montana 700 support all the feature of Oregon 450 with bigger screen, bigger memory?"

Any advice is welcome.

 

Thanks for your answer, but - as I understand - you don't own a Montana 700.
Reading the specs, it is not clear that the screen is really readable under heavy sun (Oregon 450 screen is really readable under any light condition). It neither clear that Freizeitkarte-osm maps are usable. Garmin may have prohibed the use of 3rd party maps.

 

Unfortunately, the link you give compare two Oregon model while I'm trying to compare Oregon 450 with Montana 700. I've searched productz.com for Montana 700 and they lack it.

Thanks anyway.