You may wanna expand on what you mean by best service. Otherwise check out the broker reviews on this website.
what is the best service/most widely used for active equity options trading? I am looking for a direct access broker for active options trading that has a good user friendly platform and customizable screens etc.
think or swim has the best interface, but you'll pay higher rates, I use MBTrading, which has great rates but the options interface is just ok.
General consensus from what I've read here is that TOS has the best tools and IB has the best rates (per contract). Some go with both for the best of both worlds (g)