I've been buying cheap PC2700 512 meg memory (for around $49 AR) in preparation for my new system using my MSI K7N2 Delta motherboard. I just got a Sonata case for it. But anyways, back to the memory.
I bought a stick of PNY PC2700 with Bravo chips. Never heard of the company before. Put it into my Leadtek that already had two 512 meg sticks in. I started getting reboots so I ran memtest86+ on it. I got errors. So, I took it out and no more errors (although I recently got a random reboot) from memtest86+. I'm hoping the memory is good and that my errors were caused by having 3 sticks of 512 megs DDR RAM and that my motherboard is borderline in having all 3 dimm slots filled.
I later bought a stick of PC2700 512 meg with Spectek chips (also for $49 AR) and put it into my Leadtek. Memtest86+ also reported errors. So, I'm back to having only 2 dimm slots filled in my Leadtek.
I also bought 3 sticks of PC2700 512 meg K-Byte memory using Avant chips (another company I've never heard of). I'm planning on using these on my MSI K7N2 board. I hope they are good memory. I took a chance on them -- but I couldn't pass up the $49 AR price. It seems that lately Best Buy has been selling memory for $49 AR every week. Normally I would buy memory from Newegg or something but the $49 AR price was too good to pass.