caseyn5.
Most of the Plastic Kits are quiet old by now (15yrs) and show it in detail and quality.
They were designed for young Anime fans and thus are not that difficult to assemble and paint, some even are transformable as in the Anime(using metal parts).
The old bandai and similar kits are very basic when it comes to certain details, etc.
Alot of the Kits are OOP and seem to be destined to stay that way (Regults and other Zentraedi/opposition mecha).
If you want accuracy and detail than you have to look either at Hasegawa or the Resin kit offerings like Studio Halfeye and similar.
BTW, still trying to get hold of a copy of the 1/24 Resin Valkyrie in Fighter Mode, onle seen 3 so far and lacked the funds.
The Plastic Kits tend to get re-issued every year or so as for the resin kits those are usually once of stuff.