My playthrough of GTA V on the XB1 was superb. I ran into a glitch or two. Which I think is to be expected with any game of that immense size and scope. Keep in mind while there are lots of shooting in that game, there's a plethora of aiming assists and difficulty levels to accommodate all skill levels and let the player immerse in the experience of playing the role of dirty gangster with the heart of gold or not depending on how you decide to play it. It's very open ended.

If you finish gta v and LOVE it you should at least try a Bethesda game. Or if none of that works I still push the Wii U (not as a console, it's a terrible console) for its exclusive content like Scribblenauts, which you would flip for if you're a portal fan, and the fact that they've ported just about every Zelda game since N64 to it in 1080p HD with bug fixes. And the Nintendo content can be had quite cheap.

Realistically, these days a console costs a little more than 4x $59.99 titles. So if having 2 (or) gives you access to the content you want it's not a crazy proposition.