It uses a lot less resources than any other emulator. Thomas Dickey keeps it updated. It has an unusual, but usable scroll bar. You can configure cut-n-paste to help you with command line work. You can change what a "word" is for cutting/copying to include /, ., *, so working with Unix file names is easier.
I use plain xterm as well. With 6x13 aka 'fixed' bitmap font.
Clean, simple, fast. I don't want background images, or transparency, or beautifully rendered fonts: I want to be able to clearly distinguish characters with minimum mental/visual effort, and pack as many of them into the available screen real-estate as I can see.
I also turn off color highlighting, which I don't find useful (in a shell).
My prompt is a simple '> ': no directory, no git, no venv -- I don't need to have that in my face all day long.
Years ago, I also chose an unusual color scheme: yellow text and dark blue background. This is based on the observation that human visual acuity peaks in the yellow/orange, and troughs in the blue, and so yellow on blue takes the least effort to see.
Just a note, but the sensitivity of human vision depends on the amount of light but generally peaks in the green/yellow, not the yellow/orange. This is actually the reason why some countries have changed the paint of emergency vehicles from red to greenish, they are much easier to see especially in the dark where we perceive red to be largely black.
zsh has a built-in feature which shows the cwd aligned to the right end of the prompt line. It even disappears if you happen to type far enough into the line.
Additionally, xterm starts quickly, has an incredibly responsive feel (the latency from keyboard press to a character appearing is lower than any other terminal emulator I've used) and looks absolutely stunning with a nice bitmap font.
xterm too, not for any special reason than it seems to be highly compatible (well, AFAICT it is basically a de-facto standard for all X terminals), very responsive, opens instantly and has zero frills.
I mainly use Window Maker but whenever i use KDE (in other PCs mainly) i use konsole because it is just there.
TBH my requirements for a terminal are minimal - a generous scroll back history, decent responsiveness and the ability to configure the window to remove any unnecessary frills (scrollbar aside) and i'm fine.
I usually launch my xterms from icons on the panel/taskbar/whatever-you-want-to-call-it. Doing that actually launches scripts that use whole sets of specific parameters for the new xterm window.
Thus, 'goroot' sets a largish xterm (115 x 58) with a right-hand scrollbar and reverse color and logs into the 'root' user. If you don't enter the root-user's password it will abort and disappear.
And 'read.news' runs nothing but a text-based usenet-reader in an xterm, and has extra code to prevent more than one instance running.
Once upon a time, Usenet was THE reason I was connected to the Internet.
These days, Usenet is a mere shadow of itself but many of the purely technical newsgroups still survive.
Because I am an 8-bit CP/M enthusiast, I obviously subscribe to comp.os.cpm, but I also subscribe to some 'newer' active newsgroups like alt.os.linux.mint, and comp.os.linux.misc.
Unfortunately, the other eight newsgroups I am subscribed to might have only one or two posts per year, if they're lucky.
Agree xterm is a great terminal. It supports Unicode and all kinds of font and style configurations, uses few resources, and is really fast. Personally I found it to be the most responsive, better than (u)rxvt and st.
It uses a lot less resources than any other emulator. Thomas Dickey keeps it updated. It has an unusual, but usable scroll bar. You can configure cut-n-paste to help you with command line work. You can change what a "word" is for cutting/copying to include /, ., *, so working with Unix file names is easier.