First of all, those are magnificent. The reflection in #1 is awesome. But you mentioned that your not happy about the loss of detail. I can see that these photos lost some detail. For whatever it's worth, I care to share how I save for web since you asked.
I try to do as many adjustments as I can in the RAW editor. Then save it as PSD. Then, I immediately put in 16 bit. Do whatever adjustments. Then Save it. Then resize. Then sharpen. Then save it. Then convert to the highest quality JPG. I don't do any compression at all. I use photobucket and it delivers at a reasonably high bandwidth.



