I just used this stuff and it works absolutely amazingly, it will make your top look new again and it's very inexpensive. I was just wanting to post this to maybe help you guys out and possibly save you some money so you won't have to get a new top.
I use mop & glo honest I have 99 black top everyone always says man your top looks great ! over 150,000 still nice , you have to be carefull putting it on watch the glass & paint I use a damp wash cloth if I get sap or bird dropping I will wash it let it dry Then reapply the mop& glo .....so far my top is still like new ! no problems at all