I have always been interested in the bowtech line of bows, but have never shot one (don't know any lefties shooting one) and I'm looking at a used 2000 model Left hand Bow-tech Pro-40, camo, very good to excellent condition. What's it worth? What are the major differences in the 2000 model vs. the new models? I'm currently shooting the conquest III w/ 80% max-cam. Any comparisons / opinions and input will be appreciated.