hrmm, been looking out for an series 4000 8.8 Meade UWA for months now.. the one I found (and bought off astromart) subsequently didn't turn up

Lost in the post

Also been looking for a 6.7mm of the same ilk, but I haven't seen one come up.
So, I'm starting to look for something else now.. after selling the 22Pan that I didn't really like, and then winning a 22mm Vixen LVW, I have some funds to purchase my high-mag DSO/low-mag planetary eyepiece.
Anyone have any opinions on the Pentax 7mm XW vs the Vixen 8mm LVW? Apart from cost ($450+ vs $345), what other differences are there? The both have similar FOV and eye relief.
I've looked through John Bambury's 7mm Pentax XW many times and it's without a doubt a very fine eyepiece. I've yet to look through a Vixen LVW.
It's also worth throwing into the equation a Nagler 7mm T6 as well I guess - how does it stack up vs these two?
I was going to get a 7 and 9mm UO HD Ortho, but I can't get past the allure of the premium widefields for some reason
Opinions please.