I have a basic £100 Magellan which I use in small planes. Works fine. 8 satellites. 100 waypoints. 1 route of 10 waypoints. Doesn't sound much but I remember when I was young hankering after a £x00000 Doppler Inertial. This is miles better.
The essential problem with any GPS is it works beautifully for 99% of the time but not 100% so you always have to have a Plan B.
It's always in my flight bag.