I'd have to say FootballOrb.com is stronger. There is certainly a market for football related names, (as in soccer), because those who love footy love to blog about it. But you'd have to build it out and get traffic first. I see it as a transfer rumor site. Best bet would be to build it out, host transfer rumors, show some ad / affiliate revenue, build an email subscriber list, and put her on Flippa.
Not to be a party pooper, but those other orb-related domains don't do it for me. Barely worth reg fee I'd have to say. Unless you're into developing games / apps, where you could brand out "orbgame" - cheers.