What is your budget?
what cards are at your disposal?
post a list and i will make suggestions as im sure others will as well
Budget at the moment: 0 clintz
Bangers: Angie, B Ball, BB Cool G, Bennie, Bubbles, Chlora, Carlito, Garrik, Gyro, Kevin, Jenny, Kevlaer, Laetitia, Lil Jey, Lennox, Lucas, Massiv, Meroo, MC Decay, Naykee, Platoona, Raquel, Randal, Shann, Sleam, Tunned, Syd Noze, Willy.
Sentinel: Amy, Carlos, Aurelia, Chloe, Dayton, Flinch, Havok, Harvey, Hawk, Jakson, Josh, John, Kamakura, Katja, Kyle, Klaus, Luis, Martha, Malia, Melvin, Miss Chloe, Miranda, Morgan, Owen, Rick, Rebecca, Robin, Sammy, Skiner, Thomy, Tobbie, William, Zhang, Zdrone.
Well then imho go for cheap half decks so you can slowly phase out whatever it is you're using now without having to go all in immediately.
try aiming for the decent cheaper ones first - Carlito Massiv Raquel Kevlaer with Flinch Kyle Morgan Thorny Tobbie
that way you can try out their potential before going for the more expensive ones...