One of the first bits posted on this thread was one that I have used a lot; The French Link Albacon. I love my KK Ultra more, but it's twice the price. The Albacon are German Silver (no actualy silver in it) and horses seem to like them. Also, the Albacons come in various thickness and I appreciate the thinner bit. The Mikmar eggbut is also a nice bit, but thicker and more expensive.
If you want a sweet iron french link, look on some sites that have a more Western riding focus. They do a lot of sweet iron bits.
Eggbutts are ok for dressage, right? Is that a dumb question?
Yes, you can show dressage in eggbutt (and I've seen it on low level competitions around here). However from what I was told loose rings are preferable (but it won't work for me, unfortunately, because I can't use them on my qh).