Thanks for everything you do, sp614x. Optifine improves my FPS massively when I need it, and lets me push my computer to its limits with AAx16 and extreme render distance. Magic Launcher lets me install mods painlessly, and has helped me repeatedly. We all are incredibly grateful for what you do - you've really had an impact on the community (the fact that it mentions you on the Minecraft splash screen is a testament to this). Have a happy birthday, you deserve it.
Happy birthday from a very satisfied mod user. Best mod in the world.
One thing I noticed was once while I was in one of the custom maps I was playing a chunk from the custom terrain just up and replaced itself with a vanilla normally generated chunk. (so the terrain looked all goofy) Is this a new 1.3 bug? I doubt it has to do with optifine, the only bugs I ever noticed optifine adding were the worldholes+lighting errors of multiplayer, which in 1.3 I was getting regardless.
what one should I get? Im not sure (i know I already said this but I forgot and i lost where i said this)
*Edit* also are all of the opti fine options up to date for 1.3.1?
Well, there is only one edition of Optifine for MC 1.3.1 (Ultra), so... maybe you should get the Ultra
In the options, you can try all the settings you want, and choose those which work the best for you.