Two suggestions:
If you stick with a North American model with a long history and broad support base you can easily get pdf manuals and repair videos online, and you'll be able to buy parts and accessories that fit from multiple suppliers.
If you want to shoot it a lot and carry it a little, buy something heavy. If you want to carry it a lot and shoot it a little, buy something light. Light in the hand = hard on the shoulder.
This post is excellent advice.