There's nothing against the Yuasa battery. On the contrary: its' a direct fit, so it is not possible to make a mistake with the terminals. Every Yuasa I had, has served me six years and although they require some maintenance, I'm used to that and I don't mind it. Some may warn for the danger of corrosion by acid spil but all those years I have had the vent tube in place. I had never bothered before, but last time I have also replaced this 43 yeard old tube that had become somewhat stiff. BTW, these tubes do also well for bleeding the front brake. The original 12N12A-4A now has an alternative: the YB12A-A. Yuasa specifies this type offers more CCA than the 12N12A-4A and althought that may sound like a plus, it's of minor importance. If your bike doesn't start within 8 seconds, you might as well start looking for the problem, because there is one. To increase CCA the YB12A-A has some more plates, but they're thinner than the plates in the 12N12A-4A, so it's a guess which of the two will live longer. What else is different? On the case it says: 'Sulfate Stop' and 'Retards Sulfation'. Thanks for the bla, but my charger already takes care of that. What I still regret however, is Yuasa doesn't have these transparent cases anymore so one could see the plates and the sulfation develop. Price is unbeatable. I paid € 37,- and that includes acid in two smart containers, a new vent tube, bolts and nuts and shipping. In the advertisements that I have seen, the older type always cost a few euro's more...