The TRU bracing seems, in my humble opinion, like a neat idea, but not really necessary. The most advanced bracing I have seen is breedlove's style bracing, used on breedlove brand guitars. Boat Paddle Ukes adapted that bracing-type and use it on their ukuleles.
The old moniker, "If it ain't broke, don't fix it" certainly doesn't always apply to musical instruments. But, in this case, I don't really see the point. Maybe someone with more experience could help point you in a more determined direction. I know the KoAloha guys post here, and I *think* the Kanelea guys do, too. Perhaps one of them could pop up and give you more insight.
Just to stir the pot a bit more, the whole idea behind the TRU (Total Resonating Uke) bracing was to allow more resonance and vibrations to traverse the entire body of the uke. I have read several reviews, and have noticed on my own MP, that even with traditional bracing you can make a uke that vibrates WITH the strings in a way that you can actually feel pressed against you as you play. With proper traditional construction, TRU bracing may not be necessary. It's like a "hemi"... a ford boss motor has the same hemispherical combustion chamber in it, allowing for more efficient fuel burn and thus power, but chrysler/dodge trademarked the term HEMI. So, most gearheads swear a HEMI will outrun anything on the road... even another "hemi-" motor.
Hope I helped more than muddy the water! Whichever of those brands you choose, I think you'll be pleased. why don't you contact the luthiers/companies you're interested in? They are generally very willing to help, in my experience.