Eh. I think the best way to decide on a frontend is to download and try them all. Figure out the best interface for your needs and use that one. No matter how many people say "this is the best" you'll never know until you try it.
Also, since these are all free it could be discouraging to the developers to have people ramble on about cons of their software when in all likelyhood the user didn't put enough time into testing it and are just talking out their ***. I'd rather see research done then polls read (which is in reality one of the reasons that users aren't allowed to post a poll on this site, only mod's can).