Over my 25 years of bowling, I have tried EBI several times. Sometimes this was out of curiosity, sometimes price (they used to give awesome discounts to college bowlers), and other times due to hype. I tried Apex's, V2s - original and another), TPC line balls, matrix, NV series, etc. and never found one that I liked (and I have really wanted to like them!). They just rolled aweful for me. I haven't even considered buying one in the past 8 to 10 years. Maybe something has changed in that time... I'm sure at some point I'll bite again... But there just hasn't been anything that has caught my eye.
Glad to hear you are having success! Good luck!