This group could turn to be very interesting until the end of the group phase competition. If Roma wins in Rome in next duel(it is possible, they played much better football against Chelsea in London) and ATM wins in Madrid next match against Qarbag, all the three teams would be in pretty good situation to qualify to next round of Champions League. Even if match finishes with draw in Rome and Atletico wins against Qarabag(which is most likely), we will have to wait until the end to see who will go through to knock out phase.
Chelsea still have a pretty open chance to qualify for the last 16, but Atletico Madrid and AS Roma are also still likely to qualify, so this group will be more interesting to watch. For some reason, there is not a club I really like about this group but I am more interested in seeing this group, and I also prefer to see Chelsea and AS Roma who qualify for the last 16.