If you only were to get 1 stand, I would get a good hang on all day. A climber is very very convenient, but it also very limited on the trees you can climb. If you know where you hunt you will always have that "perfect" tree that is straight with no limbs, get a climber, but if you're in doubt, I would get a hang on.
There are several great stands out there. I use Leverage sticks and stand. With a little modification to the sticks, they are as good as anything out there, in my opinion. There is a lot of great info in this thread, I accidentally deleted the photo's but you can manage without. I have since changed my mounting rope to Amsteel rope and it is so great!