Dude what are you talking about? GeForce2 MX is a HUGE improvement over a Voodoo Banshee. GeForce2 MX will probably get framerates 2-3 times greater than the Banshee at high res. I sure know that when I upgraded my Banshee to a TNT2 I saw about 50% increase, and when I updated my TNT2 to GeForce 256 I saw another 50%, and a GeForce 2 MX performs about the same as a GeForce 256. Go with a GeForce 2 MX or a Radeon LE, they'll both be good an upgrade.
I had a banshee. I had a TNT2. I have an MX on the shelf. Banshee performed better in GLIDE than the TNT2 did in D3D. So if your games use both Glide and D3D, the Banshee will win. I was so dissapointed in the performance of the MX I gave up on it. But it probably is faster than a Banshee, I never compared them directly. At any rate, even if the MX is better in D3D than a Banshee is in Glide, the Radeom LE puts the MX to shame. Oh, I own one of those also, and I did compare the LE to the MX directly, where it performed over 20% better. Then I did the registry haks and it did even better still.