Since I just did 6 weeks on the Oregon coast at TT Park's, I can tell you what we liked. At first glance, Whaler's Rest would probably be our first choice(we stayed 3 weeks). While many prefer the North side of the campground, we enjoyed the more wooded south side. A good many sites will work for you but get their site guide if Sat reception is important. It's a short walk to the beach and you are not far from town(make sure you visit Szabo's Steak house on Tuesday for there 16oz Ribeye for 11-12 buck's...its a great deal)!
We didn't stay at South Jetty but we did drive through...most of their 50 amp sites would be tight for a 45 foot rig(lots of tree stumps) but if you can make do with 30 amp, they have some nice wooded sites that would work.
Pacific City(we stayed 10 days), this CG is large and spread out. They do have sites that would work for you but some of the roads internally could be challenging (doable though). Here again, lots of 50 amp sites and lots of greenery between sites so you feel secluded....Pacific City would be a close second to Whaler's Rest. OH...the Lodge here has the best view across the roadway to the ocean...very nice.
Seaside(near the Washington border) is a CG that many rave about and while it is very close to town(walking distance) with many eateries and sites to see, we found the CG to be more like a parking lot. Large 50 amp sites are plentiful...no problem there!
Once again, we didn't stay at Long Beach but did drive over for the day. The sites here are back to back(literally). It's a nice enough Park but wasn't a favorite. I think the sites have a common pedestal with a 30 amp and a 50 amp setup...so if you are first on site, you get to choose the one you want otherwise you get what's left.
I think that's it..if you have any question's, just ask away. Have a Great trip!
