@garebear telegartner connectors are very nice. But the cable itself is also important. In example, I have compared Supra CAT8 with Telegartner terminations (available from Audio Sensibility) to Purist Audio Cat7 that uses “regular” connectors. The Purist sounds better to me so I kept it.
At some point I wanted to try the Audioquest Diamond that also uses telegartner connectors. But I draw the line on Ethernet cables way under that price point.