I just picked up a very clean 1.42 ghz eMac for a whopping $30. My intention is to put Leopard on it, add a few G4 friendly programs, and give it my brother's family as their second Mac. (I finally got my G4 Power Mac FW800 working properly and gave it to them last month and they're shocked by how nice the Apple experience is, even on an 8 year old machine. I'm slowly brainwashing the entire family into Mac addicts!) Anyway, this currently has Tiger on it, and only 256 mb of ram. I know I'll have to add more ram to upgrade to Leopard, but I'm shocked by how snappy this eMac is running Tiger with only 256 mb of ram. What is Tiger like on this eMac with 1 gb or 2 gb of ram? It must fly. I threw TenFourFox on there just to screw around and test playing Youtube videos and they play just fine, no stutter. I've never played with Tiger much, I've only had Macs with Leopard and Snow Leopard. What kind of trade offs does keeping Tiger on there present compared to Leopard? I'm not expecting them to do much video playing, but they will visit Youtube, other wise it's just mostly email and basic web surfing, so I know it will be a nice, inexpensive computer for them. I'm going to add at least 1gb of ram regardless of which OS is on it (2gb is a bit pricey right now, maybe I'll add 1gb at a time). Opinions on which OS will run best? If I max out the ram, will Leopard run much slower than Tiger will? (I'd prefer to give them a computer with the same OS on it as their Power Mac, which has Leopard).