Yes, that's the website to look out motorbike information in LOS.
Many big bike shop in Pattaya, there's one directly opposite my apartment, specializing in imported bikes. Another one specializing in Harleys and custom choppers in Jomtien. For racing bikes, Sukhumvit Road has the most shops. These big bikes are mainly for the farangs and local ah sias. Average Thais will be happy with a Honda Wave. There are also big bikes available for rental in Pattaya if you want to try out the bike first before buying.
One good thing about these big bikes are they are not the target of motorcycle thefts. One, no market. Two, high chance MIB will stopped a big flashy bike if it is ridden by a local Thai beng (profile mismatch).
The cost of such big bikes can almost get a brand new entry level car or even reasonably good second hand car. You might as well get the Nissan Almera.