For me, its Five Star Stories(FSS) kits. I have 2 FSS kits, 1/144 Knight of Gold Lachesis and 1/100 LED Mirage w/Flame Launcher. For the most part, the kit's parts must be assembled with glue. And since I am an OOB modeller, I find it hard to found out that my kit must be fully painted (Knight of Gold must be fully painted to gold, because all runner is yellow-colored, LED Mirage must be painted white, because all its runner color is greenish;the actual base color for LED Mirage is suppose to be white, yet the manufacturer didn't bother to at least make the runner color white also)

As a result, I didn't finish assembling those two yet.

For detailed kits, the most detailed one I had built is Armored Core Gaea kits. Most of its part is molded separately, even the tiny booster