I have the same top and it can be noisy at highway speeds with windows opened....this is true of ALL soft tops. But, going 75 on the Gulf Freeway from Houston to Galveston with the windows up and A/C on? Much, much quieter than the stock, framed top I had previously.
A frameless top suffers from the same issue a framed top does...running windows down or A/C on recirculate creates a constant low pressure zone (or vacuum) inside of the Jeep sucking the side windows in and allowing the top section to be affected more by the inconsistent low pressure zone created on the outside by the air moving over the top. Not trying to be rude but it's simple aerodynamics.
Close the windows, put the A/C on fresh air, and you create a higher pressure inside the jeep that will keep everything tighter and quieter.
And just remember it's a soft top. ;-)
Also, one thing the Pavement Ends doesn't have that the trektop comes with is the "top prop" (or whatever) flat bow that goes over the driver/passenger seats to tighten the top against sagging from rain and the general looseness that seems to be required for the sun rider feature. I just got the version made by Skid Row and am trimming it down so the arch won't be quite as big.