Shrapnoid, you are talking about the batteries performance in general. I'm talking about their performance in a Pc engine GT. Not all batteries are made the same quality. its nice that ray-o-vacs can go for six months without recharging, but thats in a wireless keyboard or mouse, not a high drain device like a GT. Lithiums will destory all other batteries in high drain devices, but cost alot of money, and cant be recharged. High end Ni-Mhs will not always out perform Quality alkalines, but get very close, and can be recharged. The reason people in these forums use quality rechargables in thier Gt's is because they know what they will get if they use cheap batteries. Dont take my word for it, look it up in consumer reports. Walmart alkalines will get you 133 pictures out of a digital camera. Duracell coppertops will get you 290. Duracell lithiums will get you 1099. So, it all boils down to price. Now i ask you, would you rather pay $25 for a top rated set of eneloops with charger, that will last you atleast 5 years, or do you want to spend the next 5 years buying dollar store batteries? I have no problem with your opinion and you can use whatever you want, but you will find that most people that own one of these devices understand that rechargables are the way to go, good rechargables.