Well, basically, that nowadays depends if you play any "problematic Games" (those that need special workarounds for the Voodoo3 to run), or not.
If not, the V1.07.00 or V1.07.00Beta should work without Problems.
The x3dfx and AmigaMerlin Drivers are as well "stable Releases", yet give way more Options to play with (x3dfx has alot of performance Options, AmigaMerlin's offer more Visual Quality Options IMHO).
If you play Glide Games, a look at KoolSmoky's new Glide dll's is as well useful, since he keeps updating them very nicely, and all Drivers can be easily used together with those updated Files.
That way (3D Analyzer, WickedGL, new Glide dll's), you'll get the absolute Maximum out of your Driver.
When it comes to Troubleshooting, NuDriver5 and the TDHQ Drivers are always an Option. Together with 3D Analyzer (for Direct3D) and WickedGL (for OpenGL), most Problems can be solved, unless they just don't work for other reasons (e.g. lack of Video Memory, large Textrues > 256x256, or 32bit Rendering requirements).
MikePedo Drivers are rather young, promising, but mostly no feedback available...
Performance of the Voodoo3 should be no big factor with a K6-2 450MHz CPU anyway, since (depending on Game) it technically often scales upto around 1000MHz levels.
So it's probably best to run it with the 22bit Filter, Alpha Blending = Sharper, Video Quality = Highest, MipMap Dithering = Enable and LOD Bias -0.25 (or -0.5, if preferred).
If your Driver supports it (some 3rd party Drivers do), using Edge Antialiasing might as well increase Quality even further, although it takes a Hit on CPU Performance, since this is done in Software...
That should give maximum Visual Quality, at neglectable performance Hit