Lol! Teen you keep pushing for the Wildcard. Its a good ball, but discontinued so good luck finding one NIB. The snake balls were not all the same. Python was good for dry, Rattler was a great medium piece mild off the spot. The diamondback was the jewel of the collect, in my opinion, as being the most versatile. It was a high rg symmetrical brunswick piece that backended with surface and had a great response in oil.
Now to get to the posters question. I like the c-system balls, especially for someone getting back into the game. The new Maxxed Out is a beast and probably the most versatile ball in the lineup. The Versa Max is great ball when you see a lot of friction in the backend. I think the Nexus balls might be a bit much, especially since you have a teal rhino, black ice zone and a Sabatoge. A Nexus Pearl would be the only ball i recommend for now until you get deeper into bowling and want more hook. The karma line is a must have for any fan of big b. It uses the danger zone and inferno covers from the past, giving you a somewhat similar look in a more controlled reaction.
If you're just looking to add, try the maxxed out first. It hooks a lot but continues the symmetrical theme you already have going. Lay it out strong so you get your money's worth and then go from there. The lanes you bowl on will dictate what you will need next. If the maxxed out hooks too much, you can go with the versa max or karma. Something stronger then think about something in the Nexus line.