No - FPTP is far from perfect, but I don't think AV will make up for its shortcomings.
Many MPs in safe seats already have more than 50% of the votes anyway, so don't think it'd make that much of a difference in terms of some areas getting pretty well ignored in campaigning. I appreciate that there would be more marginals, and that perhaps people would vote differently if they felt it the outcome wasn't such a forgone conclusion, but I think in lots of areas all you would get would be suggestions as to how to rank your preferences tactically to ensure your first choice got in rather than any real attempts to address the issues that matter to the voters.
Also, think it's quite likely that many people will only vote for one or two canditates anyway rather than ranking them all. This means that the winner wouldn't necessarily get 50% of the votes. My fear is that after a while, it will be decided that you must rank all canditates for your vote to count like in parts of Australia and there are certain parties (BNP anyone?) that I wouldn't vote for even if they were my 10000 choice!
My only concern is that I appear to be in agreement with Michael Howard on this issue, but I suppose there's a first time for everything!! Seriously though, I think this is something that goes beyond party lines and should be considered in light of the impact of any change rather than as a vote of confidence/no confidence in any particular party or politician.
If it was a choice between FPTP and PR however, think I'd still be dithering as can see valid arguments for and against both......