If you have never been to Cannock go and try it out. Its a trail centre, its pretty weather proof and there is parking and a café. So its good for mountain biking. But since you have never done Degla, well its also fun. So pick the one that’s closest. But for sure, they are both worth doing, if its only to figure out which you prefer. I’ve done both several times, I don’t have a favourite.
Id only say given the weather has warmed a bit, any previously frozen mud will be mushy. So take that into consideration.
I ride different places to find out what they are like, but take into account the weather.