807 Tubes - - Any Experience Out There?

I am curious to know the strengths and weaknesses of the 807 tube used in VTL's old Deluxe 140's. Can anybody share experiences regarding typical sonic signature, tube glare potential, bass control issues, etc.? Thanks!
It's a good solid tube, built for transmitters. Similar sound to other tetrode/pentodes. If you need some let me know.