cait cuz she has the longest range and can farm without problems and poke easily
my penta was with shaco i kinda managed to do it even thou i dont play him much :D
i like them but not that much i'd rate them 6 or 7
find someone with a higher mmr and u will be in queue with better players but there's a risk the one with a higer mmr can get his mmr down to...
my favs are top-rene jung-heca adc-jinx mid-zed supp-blitz worst are top-malph jung-rengar mid-zilean supp-taric
jungle-heca top-renekton mid-leblanc adc-cait supp-thresh
rammus is the best tank against attack dmg champs but galio against ability power champs