The nxt is a good looking wax mate, unfortunately its not the most durable product, but it does a great job of filling light swirls, if you don't mind applying it every 6 weeks or so its worth a buy
Gold class is a decent enough wax too, its a nice deep looking wax, again you will need to top it up every 6 weeks or so.
For the wash routine, try and go for a microfibre (noodle) wash mitt, i have a meguiars lambs wool mitt and noticed yesterday that it can cause very tiny scratches on a cd, so thats only good for wheels now, the noodle mitts i use are great, you can feel all the nooks and crannies while washing the car
The drying towel is a better idea than a chamoi too