The first image is something that I would not loot, not because it is not a "good" ring, it is just not desirable on this shard. It is so easy to hit DCI, DMI and SDI cap here, and many other options for the bracelet slot.
The second image is a ring that I would hold on to, and if not use for myself, place on my vendor for around 50-100k, if it had been the taming alone, I would have priced it at a flat 10k, but because of the FCR and additional useful skill, I would try to ask for a little more. Again, FCR is something that is easily achieved. (slapped on a vendor for 100k, waited for a week, drop the price 50%)
Finally third ring, again, I would not have looted it. Much like the 1st, it's not that it's "bad", by OSI standards both those pieces would be GREAT, and that Dex is nice, it's just not offering skill bonuses.
*Post Script Edit* See Sturger? We agree on things...sometimes.