I am a Manchester United guy and likely fit your profile. I made the move back to soccer after the 2006 cup. My friends told me the WC was not the best way to enjoy getting back into the game. Find a team that you can access and plays a good attacking style.
United has owned the premier league most of the last 25 years. Their legendary coach stepped down last summer and picked soccer's version of Gerry Faust as a replacement. He blew it big time and got canned. The team has hired the dutch national team's coach to take over this summer after the WC. He will have 6-7 new players signed, a good core in place, and a massive fan base wanting blood. Good theater that comes on Saturday mornings before NCAA or NFL football - not a bad second sport.
The other teams mentioned are great as well. Chelsea is owned by one of Victor Putin's besets oil baron buddies, Liverpool by the Red Sox owner, Maanchester City are simply proof early Druids fornicated with feral sheep. Manchester United are owned by the Glazer family who own the Bucs. Hopefully they will sell the team soon.
http://www.youtube.com/watch?v=yrsm7ce5M7w