I am a chess player, not gammon player, but one clock I really like is Saitek Mephisto Chess Clock (
https://www.ebay.com/itm/NEW-SAITEK-...sAAOSwsWpeZ~46)
I primarily play 1-minute and 3-minute chess games (sometimes for $$$) and find that this clock can take hard hits like a champ at about 1/4 of the price of Chronos.