.Host .Ninja. I think .Host is probably the most professional and useful of all the new gTLDs. Additionally, its so specific, it can really only mean one thing. I like that, very niche. I own a couple, but I don't use it for my main site, since the new gTLDs are still not widely adopted yet. .Ninja, I think is just fun. All that being said, nothing beats a .com/.net as of right now.