I like it and i have enjoyed it a lot, so no regrets at all (i got on sale tho), i am a civilization newbye, and i took advandtadge of this weekend sales to get the civ 5 expansions, since i already had the game when i bought XCOM for free (planning to play it tonight, i am excited
).
I believe that CBE needs expansions to get much better even tho i am entertained, but i can't really speak how worse it is compared to others civilizations with more content out there, on the paper, reading about CiV5, there is a lot that could be improved, and in my opinion CivBE winning conditions (all of them barring contact) are too tied to the affinity, which stream lines too much tech paths and the game experience for the player, so while the game has depth, you are not rewarded by it, but the oppossite.
Either affinity shouldn't be tied to research, or victory conditions shouldn't just be a "get academies, rush affinity, win".