Luxe Option – I highly recommend the BA SL2 — it's small for 2 but palatial for 1. Very sturdy and structurally robust enough for 3+ season use. Min. wt. 3lbs isn't the lightest, but still reasonably light — and such comfort / luxury.
Light Option – For same palatial living space and 3-season camping in areas of low to moderate humidity — the Rainbow is hard to beat. Unlike with the long tarptents, you can freely move around inside the almost dome-like interior — and also no worries about guessing at wind directions to pitch foot end toward the wind. Great for folks who crave living space and the weight is a very reasonable 2 lbs.
UL Option #1 – For adequate interior space — GG The One is an excellent choice. People say that the material doesn't sag in the rain like silnylon — but my own experience says it does. But no biggie, all it means is that you set up the tent taut — and then simply tighten again after half an hour or so — and the tent will be fine.
UL Option #2 – Also for adequate interior space but just a tad heavier is the Lunar Solo. IMO, the one-pole Lunar Solo is sturdier in high winds as its hexagonal shape throws off the winds from most all directions.
I mostly use my Rainbow either in southern Cal or the Rockies where humidity is low to moderate. But considering the many happy tarptent users up in the PNW… I think using it along the foggy California coast should be fine. In the event you have some condensation clinging to the ceiling — the Rainbow is so big inside that it's an easy thing to keep your bag well away from the walls. No biggie at all — easy to wipe away once in a while (except maybe in truly high humidity coupled with strong rains pounding down) — unless you are one of those who just hate to have moisture of any kind inside your tent. In that case, you will be happier with a double wall tent (like the SL2) even if it's a bit heavier.