I don't know what year & model JK you have, but looking them over I'd be tempted to with the "high speed" shaft as He retains the rzeppa joint at the t-case. It appears from the photo he's developed a boot that will survive high misalignment on a lifted rig.
JMHO, of course, but the rzeppa joints on a JK are a far better design than the old fashioned u-joints we all use with our aftermarket shafts. They're stronger and far smoother. I knew it was just a matter of time before someone solved the boot problem on the front shaft and developed the rzeppas into a better JK shaft.
Only warning I'd give you regards Tatton shafts. Back in Spring '09 I got a set of them with my first lift as a package deal. Problems with both. The front was off-center about .050" and out of balance. The rear one has CV issues, the "H" is screwed up and it has a binding center ball. I had Off Again in Farmington correct the front one. I finally threw up my hands and ordered a set of Tom Woods shafts as replacements and have been good to go. I kept the Tattons as spares. YMMV, of course.
'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.