Many "modern UL" kites are labelled UL, but are heavier than their years earlier brethren.
This allows true claims of amazing trick capability because the kites are really closer to being a heavy UL or "light standard".
The question I would ask of you is how much of the UL do you want along with your tricks?
To me, a UL weighs in under 8 ounces (under about 230 grams).
The only Black Pearl UL I have flown weighed in near 255 grams ( 9 ounces), although this is an almost 8 foot kite, so UL is appropriate.
Newer ULs have longish standoffs which increase trick performance, but decrease low wind range.
I have not flown the Ophidion, but enjoyed both of your other choices.
Good luck. When in doubt, pick the one you think looks the best.