Here's an interesting little peice with the MX, radeon ddr, LE.
http://www.xbitlabs.com/video/radeon-le.html
You mean GF2 GTS 32meg right? Don't bother with the GF1 DDR, it hasn't dropped in price in a long time and often isn't much better than the GF2MX.
I'm a bit torn as to what is the best card to get.
Sub $100:
1. Radeon LE - clearly with hyperZ the performance rocks but I'm not 100% sure what the success rate is with enabling it (I've heard some statements saying that you might not be able to enable it). The above link says that it's ALWAYS enabled in OpenGl. This makes me think that the chances of success in D3D are 100%. The LE's 32-bit performance is very very nice, it's not really ment to do 16-bit (about the same speed as 32). The OC potential seems to be very nice going from what individuals have said and this review.
2. GF2MX is a decent card but often the performance isn't tremedously faster than a TNT2 ultra (mainly 32-bit, 16-bit it's much faster)
Sub $150: (not ranking)
-KyroII - This card has some very interesting performance to it. The problem seems to be that it's not always consistant. Sometimes it's freakishly fast (GF2 ultra), other times it's pretty close to an MX. It seems that sometimes the lack of T&L hurt it, other times when you'd expect no T&L to hurt, it doesn't. Also, you'll hear people also say the price of the card will be $150. However this is the suggested retail price, so likely web prices will be a fair bit lower.
- GF2 GTS - clearly a great card and you can't go wrong with it. Leadtek's card with 5.5ns (instead of normal 6)memory is pretty cheap and thus interesting. Beware not all Leadteks have the 5.5ns. Doesn't matter much if you go with a different brand.