You can come first with most clans, I'd go with mono Sentinal with either Hawk or Hugo (probabily Hugo) if you wanted a sentinal deck. If you want a Uppers then Uppers/Ambre would be the best choice. Montana is great with Hugo so mono Montana is great aswell. All Stars and Uppers are a nice pair, very high in the ranks. We also have clans like Junkz that see alot of play in DTs (mainly split with Uppers/sentinal) or the good old Piranas with there long lasting 25+ point games due to there pill +/- and sneaky lock/game tactics
At the end of it all its down to you, theres a nice amount of clans to choose from just pick the best for you and play as fast as you can, theres no point playing with a 'recommend' if you don't like the clan there 'recommending' you.