Recommended PS1 plugins

Firstly, stop using ePSXe and use PCSX-R.

GPU

• 3D: PEOPS OpenGL 1.78   (Pete's OpenGL 2.9 if you run into problems)
• 2D: gpuBladeSoft 1.41   (Very accurate, but renders everything on CPU so can be very demanding at high resolutions)

 SPU

• P.E.Op.S 1.10 beta

OR

• Eternal SPU 1.5

 Input

• LilyPad latest SVN* (under Input APIs set Keyboard API to Raw Input)

*Get this from the latest SVN of PCSX2

• Pokopom Xinput Pad Plugin 2.0
• LilyPad-motioninjoy (if you've a DS3 and are using MiJ(but you should really be using that alternative by now))

Also if you don't want to use plugins, and want something that just werks, use Xebra, or RetroArch w/ Mednafen core.