Jacksonville's park is pretty cool even though it is only 1/3 the way done. The "swami coping" (cement) is awesome. The launcher thing is good to get some ollie to grinds or tails. The little pyramid is pretty tight and not very useful. The overall flow can keep you moving non stop for a quite a while. I can't wait to see this one get the rest of itself finished. Rumor has it they are trying to raise some more money.
It's free, and outdoors. Helmets are required. Restroom and drinking fountains are nearby as well as some decent looking restaurants and bars.
This skatepark is pretty nice, hard to explain. It's located up a mountain kinda, so when you're riding there it feels like you are in the middle of freakin' nowhere, it's weird. I guess it's worth checking out, but the drive from I-5 will set you back a good 1/2 hour or so. Ask around town for directions to the skatepark, I think everyone knows, it's a small town.