Crucial is basically Micron's retail division. Many companies might sell "Micron" memory but you don't know whether you are getting true sticks from Micron or just the memory assembled on generic PCBs. Ordering from Cricial guarantees you are getting the best stuff. The pricing is very competitive with other name brands such as Kingston. Service is top notch and there is usually free UPS 2 Day shipping. Enthusists love Crucial because their memory can overclock very well. It's not unheard of for CAS3 PC133 running at CAS2 155Mhz+. I;ve had a one stick goto 166Mhz CAS2. Not bad at all.
Windogg