Those and Blazer are the two that I have the most of. I keep hearing complaints about the quality but I have shot some awful good 50 yard groups with them in most, not all of my guns. About a year and a half ago they made a big effort to improve the quality but the bad reputation still follows it around. You did good getting what you did for the price you did.
For Brian 48, My last foray with Thunderbolts at an informal off hand iron sights match with my 46 year old bolt action.
Misses are on me not the ammo.