I love the multitude of clipboards.

I love the fact I can select from the terminal, or from the GUI, and I can use Shift + Insert or middle click.

I love how I can have another clipboard using Ctrl-C / Ctrl-V.

I use both on an everyday basis and has been for almost two decades.

I like having bot selection and clipboard, but problem is consistency. In terminal (rxvt) shift-ins pastes selection, while in GTK app, the same shortcut pastes clipboard.