The 505T has been a great benchmark for me this season.  Its midlane read and consistent backend have been a life saver when I'm playing on sport or tougher conditions.  With the discontinution of all the 505 balls I'm looking  a little ahead for posible replacements.  Suggestions?  This is the only Track ball I've really liked in a long time (since the red Enforcers).  I have thought about a 715T but m a little worried about the bigger core not being as smooth.  I was also thinking a Gamebreaker, or possibly a Marvel.  Any thoughts or suggestions would be appreciated. 

For me the gamebreaker would be the best fit. It gives a great mid lane read and is very smooth on the back. The 715T is a stronger version of the 505T. It does have a little more pop on the end, but can be used just as much. So it would be your choice between the 715T and Gamebreaker. I would assume we are going to get a new core in the 5 series line this summer just like the 7 series line got a new core in the 718A.

I've thrown a demo ball of the 715T and it's very close to the 505T. The backend movement is a touch different between the two but I liked how it rolled.

i know where you can get a nib 505T 15lb  --- if interested pm me ---- or get a Gamebreaker -- i still have my original and it still kicks!

I have both the 715T and the 505T. Both with same drilling, The 715T is a stronger version, but it has to have oil. Otherwise mine burns up so fast in pretty much goes straight. The 505T is very versitle in either heavy oil or in light oil.