As someone who's been very lazy about R30ing any of my Gleti's, but also as someone who's seen a ton of players who have also been lazy and not aug'd their Sakpatas past R20...
The Reciente Coselete is kinda great.
It's got more accuracy than R30 Sakpata's body and 2% more double attack. No crit rate or PDL, 1 less DT, and none of the other defensive/healing received benefits. 2% more Haste though.
But as a piece for building TP, it is superior to R30 Sakpata's. R30 Sakpata body when taking its +55 accuracy and 25 DEX into consideration has about +73 or +74 accuracy depending on your race's/gear's DEX total.
The Reciente Coselete has +50 accuracy and +32 DEX, putting it at +74 accuaracy or +75 depending again on your race/dex gear.
R30 Gleti's on the other hand, beats it out slightly in the accuracy category and also by having Regain. Of course, Gleti's only sports PDT, and while you'll hear good talk about Shell V and MDT being easy to cap, breath damage is quite prevalent because of endgame enemies sporting fetters and gyves, so the Reciente Coselete beats Gleti's defensively, for the most part (MDB on Gleti's is huge, so if you can get enough DT elsewhere to not be an issue for your healer, then it's still the better piece. But only when it's R28+).
Like yeah, it's not blowing our socks off. But only us crusty veterans could look at such a nice piece, and say, "Meh, this sucks!" When it doesn't suck at all.
Like you could get a Reciente Coselete as a newbie or on a mule, and that character would never even have to consider RPing either Sakpata or Gleti body, realistically.