avengers are fun, depends on how you want to play it, i went the high ac through the roof and maneuverability, thats where the elf avenger came in, can shift through difficult terrain and almost all the pursuing avengers abilitys let you shift, theres also the other one from phb2 (cant think of it right now which punishes enemys when you get hit. theres also the one from divine power but i havent looked into that myself so i cant really give an opinion on it.