If you have an interst in the thunderbird I would suggest you take a test ride on one before making a decision. Even if its the storm it will give you a good feel for the reg thunderbird as they both handle the same.
As said before it really dosnt matter what you buy to us but to not ride something you have an interest in and buy a bike you later find to be second or third best because it was easyer is insane!
I cant compare the victory to the thunderbird but I can tell you that none of the softails I rode put a smile on my face like the thunderbird does!!
Good luck with your search!