DamianJ made a good suggestion, but sometime success means attracting affiliates. A design could convert 4x that of another, but if it can't get traffic then it's worthless. This can only be remedied by developed trust with affiliates or slowly gaining traction with affiliates over time. I would run multiple tours and give webmasters the option. If you do find that your amateur tour is converting better, you can then suggest the amateur tour to webmasters that are already sending traffic.
Also, when looking at your conversions, make sure you are looking at your traffic sources in detail. You will begin to spot which tour will work best for each traffic source based on the traffic it attracts.
Hope it helps... Take care!
