Re: starter set
My vote goes to the Roland, but it's a personal choice. I have played Roland and find them very good with many usable sounds.
Many folks on this forum like Roland, many like Yamaha. I don't have any experience of the 2Box kit.
My advice is to go to a shop and try them both if you possibly can. You will get an idea of the sounds plus how they feel when you play them, and the way the sound module features and menus work. You may find a winner emerges when you do that with both.