I got a B for my A2 c/w - a few marks off an A. I chose an area which really interests me, so I compared two cricket writers in The Times. I did a thorough textual analysis using the key frameworks...I also mentioned phrases and syntax as this can let you enter the higher marks. Just refer back to last year's frameworks - grammar/lexis/semantics/pragmatics/phonology/graphology. If you are a keen textual nut, then this is definitely for you. All you have to do is pick a text or two from each writer, compare them, show some graphic descriptions, and use this to back up how they are so different. I also stated why this might be, given The Times is a broadsheet and must provide a range of analysis, from reports about the actual cricket match and reports on wider issues. I found linking politics, history and socio-culture easy, as The Times is strictly a conservative paper.
Basically, pick an area that you absolutely love, and it should be easy. If all else fails and you're really stuck, stick to child acquisition and use plenty of theory, frameworks, and back the two up against each other...hope this helps!