Probably can't go wrong either place; KISS should draw some good equipment but LPS always has a stout field. It may come down to your preference in race tracks. Paragon is sort of a paper-clippy 3/8, haul it down in the turns and dragrace to the next corner; amenities are, um, "quaint". LPS is a heavy clay, high-banked bowl that usually develops two grooves, one at the bottom and one right up against a substantial cushion; nice concrete stands, well-organized and decent concessions.
One other thing, if it matters to you; LPS sells beer & other adult beverages, Paragon is BYOB....