I've got a couple Dymo Rhino 5200. Got them off amazon with the case for like $120. https://www.amazon.com/Industrial-RHINO-Label-Maker-1756589/dp/B002M1HKLC/
Love the thing, TON of labeling options. Only thing you gotta watch is using the right labels, especially when wrapping them around a cable. The plastic labels unravel, but the nylon labels stay wrapped even with heat.
Get yourself some of the nylon labels and go nuts. Nylon is better at being wrapped around cables in my experience, plus resists unwrapping to heat like the plastic labels. I've used this thing in two different jobs now and I cannot recommend another. So many options.
Dymo Rhino 5200. You can’t go wrong. Works great for cables, panels, and general labels. Careful which tapes you buy, some of the knock-offs are terrible. Nylon labels work best and work when the labeler has been in a cold vehicle all night.
Sanford Brands 1756589 RHINO 5200 Label Printer Kit https://www.amazon.com/dp/B002M1HKLC/ref=cm_sw_r_cp_api_glt_fabc_T1F76ZPXRNGZ2JPDFSQW
Dymo is great if you pay the extra price for the industrial version.