Well, I DO love ramen, and was hesitant to join this thread so soon after it's revival, but I'm ready to do so now.
My favorite spot for ramen in LA is called Daikokuya (
website here). They use the tonkotsu style broth that I favor and have a delicious chahan side dish. Their tsukemen is decent, but I really prefer the ingredients combined.
In Tokyo, I tend to hit places like Tenkaippin (a chain), Ippudo (near Waseda U), and my former favorite, Kokuran (which serves Kyushu style ramen), which has unfortunately closed or relocated. Kokuran's karamen (spicy ramen) was 700 yen, and kaidama (noodle refill) was 120. The last time I was in Japan, I discovered Hiroshima style and really enjoyed it. When I was a student there, we found a place that served all-you-can-eat ramen (just the noodles) for about 800 yen. It was just decent, but certainly satisfied all involved.
I tend to like my noodles hard (katamen) and places like Ippudo offer a variety of degrees of hardness. How about you guys?