I figured since I was gonna do this for myself anyway, I might as well share it with the rest of you who have no time, or will to do this.
I just happened to start playing Final Fantasy Tactics, so I decided to do this experiment on it. There are 3d objects, sprites, as well as text in the screenies, making it a good test subject.
Unless otherwise noted, these are the options I had on Pete's OpenGL2 plugin v2.9.

I tested a variety of filters at high resolutions (1024x768) as shown in the image posted below. It's a huge file, so if you're too impatient to wait (the file is 9MB [5176x4804]), I found that the 4xScale shaders > 4xGLSoft shader was the best in terms of readability and improved graphics. The AA Shader v2.o - Bloom shader adds a bit of light bloom at the cost of sprite edge antialiasing/smoothness.
It's also important to note that the 2xSal that is applied in Pete's OpenGL2 plugin v2.9 options menu may be the reason some shaders look terrible. I'm not gonna go through and test them all for that though.
I don't remember where I found these shaders, but I'm sure a quick google of "epsxe plugins" or "epsxe shaders" will bring them up.
Big File-->
<a href='http://myfreefilehosting.com/f/96a0ec8291_9.17MB'>http://myfreefilehosting.com/f/96a0ec8291_9.17MB</a>
The following image is a test to see the difference in 4xGLSoft when having different Texture Filtering and High Res Textures options applied. There were small differences between them, but I thought the extended + smoothed sprites and 2xsal looked the best. It may be kind of hard to tell with the jpeg compression.

Also, if anyone can think of better image hosts I can use, tell me! And if you think this is useful, ask a Moderator to stickie it!
Cheers,
Ryan
I just happened to start playing Final Fantasy Tactics, so I decided to do this experiment on it. There are 3d objects, sprites, as well as text in the screenies, making it a good test subject.
Unless otherwise noted, these are the options I had on Pete's OpenGL2 plugin v2.9.

I tested a variety of filters at high resolutions (1024x768) as shown in the image posted below. It's a huge file, so if you're too impatient to wait (the file is 9MB [5176x4804]), I found that the 4xScale shaders > 4xGLSoft shader was the best in terms of readability and improved graphics. The AA Shader v2.o - Bloom shader adds a bit of light bloom at the cost of sprite edge antialiasing/smoothness.
It's also important to note that the 2xSal that is applied in Pete's OpenGL2 plugin v2.9 options menu may be the reason some shaders look terrible. I'm not gonna go through and test them all for that though.
I don't remember where I found these shaders, but I'm sure a quick google of "epsxe plugins" or "epsxe shaders" will bring them up.
Big File-->
<a href='http://myfreefilehosting.com/f/96a0ec8291_9.17MB'>http://myfreefilehosting.com/f/96a0ec8291_9.17MB</a>
The following image is a test to see the difference in 4xGLSoft when having different Texture Filtering and High Res Textures options applied. There were small differences between them, but I thought the extended + smoothed sprites and 2xsal looked the best. It may be kind of hard to tell with the jpeg compression.

Also, if anyone can think of better image hosts I can use, tell me! And if you think this is useful, ask a Moderator to stickie it!
Cheers,
Ryan