I use resilience. It's pretty good. EDIT: Ohhhh PvP or raiding client? I'm not sure. Sorry. You can try resilience though.
I use; Huzuni, Resilience, Reflef Pro, Lewd, and H&E. I would prefer Huzuni for raiding, and all the others for pvp.
The best client is my modified version of Weepcraft. Designed for Minetime's server specifically, and with it I have a great a kill ratio. Want a copy? Too bad.
I use Resilience because its an Awesome Hack Client that is Nice and Simple and still has lots of Hack choices <- (opinion). You may use it for PvP since it does have KillAura , Speed 16. Auto Armour , Fast Eat (Not sure if that works) , Flight , and more. but it is not very good when it comes to raiding But , you may use the hack client 'Magic' , now 'Magic' is different, to be honest 'Magic' is one of the BesT hacks i know. Edit: nvm , Just use WeepCraft
Resilience is terrible because it has so many bugs Weepcraft is by far the best (coming from and Iridium user). It has literally every command and you can have sooooo much fun with it. However, it's ka sucks
Weepcraft in my opinion sucks. It lags my pc out and it is not a very good pvp client. Although, Resilience doesn't suck. It is great for pvp and it could be good for raiding. Edit: It also boosts your FPS up.
I use Resilience for every other server except Factions, where I use WeepCraft, the best 1.8 client I have found and with VBO's on it doesn't lag too much.