We only have so much skin, which puts a premium on getting good work. As has been said already, well known artists usually get that way by doing high quality work. On the other hand, getting a tattoo is about more than the finished product. For example, my first tattoo artist was a young artist who's been doing tats for about 2 1/2 years - the same amount of time I've been doing my profession. There was something about that similarity that appealed to me. We're both still learning the ropes so to speak. We connected right away and had pleasant, entertaining conversation while I was getting my tattoo. When I look in the mirror, I like what I see. When i went back to the shop, he remembered me and was excited to see how the tat healed and we bullshitted some more. Now we have a sort of connection. I mean, we aren't best friends or anything, but we're cool. I like that hes relati ely new and young and that i have some of his work. I do think it helps the community grow. I wouldn't change that for anything.
Ultimately, there's enough skin to get great tattoos from well known artists and also get tattoos from lesser known artists as well. Just do what's comfortable and what you don't mind seeing in the mirror. Hell, if someone doesn't post on this site, they likely won't know the difference between Frith street and smith street any damn way.