I don't know if it's Plasma dependent, but I love using yakuake on my laptop for the convenience of pressing F4 and it just popping up. I know there are shortcuts for making a terminal pop up, but I really like how yakuake closes itself when you click out of it.
Couldn't tell you about the technical side of yakuake, but I will say I just love the convenience more than anything else.
Used to use it a lot. However these days I prefer window'd terminals that popup with a keyboard shortcut. To answer op. I use konsole atm. Usually that suffices, I don't know what features I'm missing but I keep an eye on Warp. Tempted to write my own /again./