Crossbows are a highly individualized object. What one persona likes or dislikes may not be relevant; besides there is always the get-what-I-got factor. Shoot as many as you can. And by all means call Dave (as stated above). He will maintain objectivity.
Consider the bow's reputation for durability, accuracy, ease of maintenance as well as the manufactures warranty, longevity, reputation for customer service and repressiveness.