What are the odds you will have to pull your firearm to defend yourself?
OK, now factor in the odds that, after pulling your firearm, that you will have to shoot.
OK, now factor in hit probability (shots fired as opposed to shots that hit your target) while shooting in a high stress scenario, where your target might be shooting back.
Now factor in the "Superior Performance Margin" that your new "Magic Bullet" has over the Federal Hydra-Shok.
Odds are, it's not going to matter what friggin' bullet you are shooting.
What good is it going to do you if your newly discovered "Magic Bullet" doesn't feed properly in your gun? What good is it going to do you if the recoil from your newly discovered "Magic Bullet" bucks so hard, you can't quickly make accurate follow-up shots? What good is it going to do you if your newly discovered "Magic Bullet" uses a powder that creates a bright muzzle flash, ruining your night vision? What good is it going to do you if you spend all your money on 20 rounds of ammo, but never shoot it until you need to, and find out any of this information?
Test any ammo you consider carrying. Run a large enough amount through your gun to ensure that it will feed, fire and extract in an acceptable manner. It is up to you to decide what that amount is.
I've said it before, and I'll say it again. If all I had was 135 grain Hydra-Shoks, I'd be ok with that. There is ammo I prefer over it, but just because it's not the newest ammo on the block, I won't bash on it. I won't tell you that all hollow-point ammo performs the same, but I will tell you that if it functions well in your gun, you should consider it. Functionality is infinitely more important than performance. There are a lot of dead and maimed folks that would argue for the effectiveness of the Hydra-Shok line.