Well, I'm no expert but I just switched, too, after five years of nothing but AMD. Got sick of stability issues and flakey processors. I don't want to fight with AMD fans, and I've certainly given AMD a ton of money, but I finally went to a P4 2.0B Asus board (P4S533) and I really like it a lot. I first got a glimpse of the Intel versus AMD stability at work where I supported 12-14 users. I started building AMD systems as soon as I got there but over time began to notice that the only people having system problems were those AMD rigs while the Intel rigs ran month after month without a single issue. BTW, I have five systems at home - four are AMD and I have about seven other AMD builds for family members and friends so it's not like I don't know AMD.
Anyway, I think there is supposed to be a big CPU price drop around 11/10. Also, there are the Granite Bay (Intel) and SiS 655 chipsets coming out in a week or so which will support dual channel DDR (two sticks required). If I were you I would not buy for about a week or two for CPU prices to possibly fall and for the reviews of the new Dual Channel DDR boards to be posted.
I believe the "A" means Northwood but I am not sure. I do know that the Northwood overclocks better.
Like I indicated, there are people here who have forgotten more about these issues than I will ever learn and I'm sure they will jump in soon to add to the conversation and perhaps correct me if necessary.
