I am a huge Columbia 300 fan, and have had no issues with the lifespan of the covers. My Antics is still going strong, and my Swerve is a beast. The only issue I have seen with them is they tend to be softer than other brands. The bridge on my Antics and Swerve both cracked. None of my other 16 balls all drilled by the same driller have cracked. I have been throwing both with the cracked bridges and they haven't gotten any worse. The only C300 ball that didn't work for me was an Encounter, but that experience didn't sour me on C300 products.
I am not the biggest fan of Ebonite branded balls with the GB line of covers. GB covered balls have generally been weak for me. I had to take my Warrior down to 500/1500 siaair to get a consistent reaction from it. Otherwise it was extremely squirty. Similarly, I needed to go to 500 siaair on my Ebonite Adrenaline Shot to get a useable reaction. My GB2 MVP was a dud and wound up in the trash despite multiple surface adjustments. I have also noticed GB covers to be very soft and susceptible to damage more than other brands.
My Track stuff has had no problems maintaining reaction.
I don't do anything crazy to maintain them. I simply clean them with Monster ball cleaner immediately after bowling and before putting them back in the bag. Maybe Clean and Dull 3 times per year. Surface refresh with siaair every few months. Nothing more than that.
