I do have and ESP 5 string. I have and ESP Ltd F-205, it has since been taken out of production and the entire F series is developed around it.
The B series basses are mostly 34 and the F series are mostly 35 scale.
First, I have played on a B5E and really liked it. I only subbed on it for about 20 minutes, so I cant give you a super detailed review of it. It felt very similar to my F205. The action was nice and low. The B string was a little bouncy, and less taught than on my bass, but only just noticeably so. It felt just the least bit looser. I doubt that it was do to a heavier string gauge than I am used to, I run a .125 B string. Still there was no detriment to the instrument. If I didnt already have the perfect bass, I would have probably bought a b5E by now.
I love my ESP Ltd F-205. It is the most perfect bass, and I will vouch for any F-series bass because of it until I am proven wrong. When I designed my $6000 custom build I based everything from the nut to the bridge on the ESP neck. If my house was being fire bombed, my ESP is in one hand and my dog in the other (my wife has legs, she can get herself out.)
I still remember when the bass was delivered. It had perfect action straight from the factory. Ive owned it for over a decade and have never had to get it set up. It still holds tune perfectly and has been intonated from the start. I dont know what to say about the bass. It would take millions of dollars to buy off me. Okay, let me try to be objective.
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I cant. Its damn fantastic.
The string spacing is perfect. I dont slap often, but the strings are spaced just far enough for my sloppy slap playing. They are close enough to rip through fast finger flutters and pick sweeps. The string tension is perfect. I run 125, 110, 80, 50, and 40 gauge strings. They are all tight but still have a comfortable soft feel to them.
All my electronics are stock EMGs, and ESP uses their own on a lot of stuff now. With that in mind, the EMG-HZ pickups and 3 band on board eq are fantastic. I can go from glassy bright (with a little roundness to it, not so sharp), to woody and percussive, to deep dark and heavy.
The F-series is all pointy and ****, but its not that big of a deal. I like the way it looks. Other than that, it is still comfortable. When standing the points dont do anything but look awesome. Dont worry if you sit while you play. The angles are so that they arent digging into your thigh.
The body is also contoured on the edges, beveled (?). You dont have any hard body corners digging into your forearm, when standing, or ribs, when slouching.
I love it.