Go with a good carnauba like Natty's Blue, Souveran etc. NB has great durability for a nuba, and looks extremely wet and deep. My truck sits outside 24/7 as well, done back in April and even with all the rain and crap last three months it still looks top notch. Only carnauba I've seen last longer is Collinite 915 which I have as well and you can get otc at any Marine shops (have it for boats and ski's but you can use it on autos).
You love the Edge 2K pads, love mine

, and from the pics I've seen of XMT Glaze topped with a nuba, you'll love it as well. Maybe try Clearkote Carnauba Moose Wax and post pics as I want to see what it looks like

, supposedley has excellent durability and very wet looking.