If you don't care about the weight (35 lbs), go with the Grizzly cllimber. You can pick one up for $100. It is very safe and very sturdy! Summit makes great, light, climbers, but they cost a lot more.
When you get your climber, make sure you practice before you use it on a hunt. It takes a little getting used to, especially if you have a tree that's larger at the base than it is further up. In that situation, you'll have to angle the climber so that by the time you get to the desire height, your climber will be level. I try not to get mine angled any more than 45 degrees. Any more than that and you run the risk of slipping, because the teeth won't be able to set properly into the bark of the tree.
So, when you're ready to climb, give us a shout and we can kinda talk you through the steps on how to do it.