I'm dying for an accurate stylus for my iPad. I do too many notes and visual mockups that upi epwant more precise that the big rubber blobs give. I'd be willing

I'm dying for an accurate stylus for my iPad. I do too many notes and visual mockups that upi epwant more precise that the big rubber blobs give. I'd be willing to pay $50 for this if it lasts and works as advertised. No luck so far!