Yes, I'm a Feurio lover :p, but I don't have a Plextor burner, so I can't compare Plextools with Feurio.
IMO, if you only want to copy a disc and forget, then Feurio shouldn't have any advantage over Plextools.
Plextools should have better "error correction" and it's as fast extracting... Feurio only detects if there are C2 errors.
But if you want something to organise your compilations I guess Feurio is better. When you open Feurio you have all your projects there, to hear, edit a bit, add songs... (You don't have to search in your hard disk to get a compilation).
Sometimes I found myself searching for the songs I burned in a disc, and with Feurio you have all the projects (well, the "structure" or "cuesheet") in a folder (even the deleted ones), and there's also a burning log with all your burnings (dates, speed, minimum buffer levels, etc.).
It also hides the process of extracting to a specific folder in the hard disk, so maybe you save a bit of time there and then searching for the WAVs or CUE. Also, the track editor is the fastest althought very limited.
The reason I started using Feurio some years ago was its burning engine. I don't know anything that can resist buffer underruns better than Feurio in a poor working system. Nowadays, with BurnProof and faster CPUs this is not usually important, althought sometimes it can make a difference or is useful if you want to make multiple burnings.
Also, the drivers support is usually the best (CD-Text tuning and overburning basically), althought more limited in the amount of burners.
The most useful features that I find lately, are the detection of defective frames in MP3s (Feurio also has a perfect MP3 decoder) and the settings of pauses. You can't find these features in almost no other burning program.
So, at least, I'd use Feurio to burn MP3s and Cuesheet projects before anything else. EAC and Plextools have advantages ripping difficult discs, but I still use Feurio with C2 errors reports usually. (EAC is too slow for me). The big disadvantage is that Feurio is not free, unlike EAC or Plextools, althought the demo is unrrestricted.
@ babaz, maybe they are waiting for Feurio 2 to support DVD/CDRW burners... I don't know, it's a pity...