My Ranger is coming up on 15 years old,shows no signs of wearing out, and I would buy another one when needed.
Here are some of the things I don't like. First, the rip cord for ditching weights is an all or nothing proposition. Second, the accessory pockets outside the weight pockets are located a bit too far to the rear for my liking. Third, the shoulder dump valve is next to useless.
Finally, there are a lot of Ranger bcd's out there and they come up very often on Ebay. You shouldn't have a problem picking up one in good shape for less than $300. If you go that route, the first thing I would look for in the pictures are metal d rings on the shoulder straps. Then ask the seller how long the bladder holds air when fully inflated and what shape the stitching and zippers are in.