Are you looking for new suggestions or something to add to your or are just curious what everyone else is using ?

My current lineup (every tournament I bowl is on sport patterns and Im doing a full time sport league this summer)

Total Inferno - label drilling pin next to the ring finger CG right in the center of the palm left at OOB finish
Gives me a very nice early roll and nice arc on the backend and very strong through the pins, I use this on the heavier longer patterns

Full Swing - drilled pin under ring, CG at mid line of palm right of the pin, and MB to the right and slightly below the thumb hole, weight hole in line with the CG OOB finish
Gives me pretty good length and very controllable backend, I ues this on heavier patterns where I dont need such an early roll and a controllable back
end

Track Inertia drilled 4x4 pin over ring finger stacked CG, OOB finish great length with a very hard skid/flip motion I can use this if I need to get a little more inside than normal and need the hard flip to kick the corner pins out

Nomad Pearl - pin slightly over the bridge, CG kicked 45 degress on mid line of the grip no weight hole I just knocked the polish off of it, I didnt add any surface to it
This is my go to ball on most shots out there gives me excellent length and strong backend motion I can play almost anywhere on the lane with this ball and retain outstanding carry from most angles

Mars - drilled 4X4 pin over ring finger CG stacked no weight hole OOB finish
this is a step down from my Nomad Pearl and I get great lenght with a moderate backend motion, if the shot starts to break down and I want to continue to play my line when the Nomad is too much back end I will go to this ball, also works great on a THS shot for me

These are the 5 Im currently using just about everywhere right now on all sport and PBA shots that I come across also I dont have a plastic spare ball I just flatten out my release and go straight at the pins,
I also pack a purple rhino pro drilled 4X4 pin over ring CG stacked if Im going to house that is known to hook more than usual, or if Im playing some very short patterns like between 35 and 38 feet or so
or sometimes I like to bring it to league and beat up on guys with $240 latest greatest hook in a box new release out there and beat them with something 15 years old

I'd suggest a touch of caution with something like a natural. I have been using a urethane quite a bit lately, and find that if there isn't much head oil, it can be very difficult to use, as it starts to roll the moment it hits the lane. If I want some more push through some dry heads, I've got an old reactive ball which works pretty well, might be worth looking around for one on eBay
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Reporting from England