Use 8lb Ande a lot because it is very strong, but it does have a memory problem. Line twist seems to happen to me with all my spinning reels no matter what I put on them. The memory doesn't help though. I've done the whole, lay the spool down and if it twists, turn it over thing, and I still get line twist.

For memory, you can dip the spool in almost boiling water or tie the end to something and pull on it.

The whole key is how you put the line on the reel. Make sure the line comes off the spool in the same direction that the reel takes it onto its spool. Reel it slowly. When the line starts to show a twist, and it will. Flip the spool over one full 360 degree turn and continue. As for putting your line in boiling water heat will kill monofiliment line and I would not do that. It will severly weaken your line. Another thing will help, once you spool on fresh line and get to the lake. Take your line with nothing tied onto it. Let it out behind the boat and drag it a short distance. Then reel it up under tension at a moderate retrive.  It is funny that you ask this because I just showed Russell Baker how to properly spool his spinning line. If you ask him he will tell you the way I described will make a difference. There is no way to totally avoid twist with a spinning reel though. The best you can do is minimize the amount. Over the course of use it will get some twist back in it no matter what you do. Have you tried a braided hi tech line like power pro. It twists way less than standard monofiliment does. It is more sensetive and casts much further. It is more expensive but it will last way longer and I think the costs balance out over time.

You might want to try some "Reel Magic" spray on your line.  Something I usually do is try to use a very small barrel swivel when I am using plastics T-rigged.  I usually use about a one foot leader.  I tried 10# Vanish but on my spinning reels it kept  whiffling off.  I tried everything but nothing helped.  But this way it allows me to use another brand of line and still use a leader of Vanish. 

Also, I never use anything over 10# line on my spinning reels.

Hhhmmm...I was always told to flip the spool over end for end when getting twist while filling spool, not 360 degrees.

Rich

When I spool up I thread the line through all the guides and then I stick a Pencil through the spool, cinch it in between my feet, put a little bit of pressure on the spool from pushing into the floor a bit. Then just start reeling, it works great. but if you do get a twist, switch sides to where you are recieving the line from a different side of the spool (180 or 360 degrees)

I Also use McCoy Fishing Line, nothing over 8 like brian said. McCoy has EXTREMELY low memory because it already has a Silicon impregnation process in the line, which silicon or silicote or silicone as its called different names is an ingredient in "Reel Magic".