It's all going to be personal preference and based soley on personal experience, for the most part at least. I personally have never had any trouble with any of my quantums, I have 3 right now but I've had more. The one reel that really left a bad taste in my mouth was the Revo S, I actually had two and both were complete garbage. They both felt tight, grindy, couldn't cast anything under 1/2oz with any real distance without overrun. I really wanted to like them, that's why I bought a second, hoping I got a dud....nope....the second one was just as bad and the cap thing on the palm side fell off and into the drink the second time out with it. Now I have a '10 SX and '09 Premier, no problem with them, extremely smooth and really nice reels but the Revo S?....I'll take my Quantum Code over it anyday.