I have the Park Tool GG-1 grease gun (not the toothpaste tube type) - and it's great, BUT the capacity is quite small as I use it a lot . . . servicing sometimes 2 or 3 bikes a week - it needs refilling from the tub of Park's grease frequently which is a bit of a PITA.
Does anyone know of a larger capacity, similar trigger/push button gun that dispenses through a fine nozzle like the Park one? Searching finds loads of guns but they all seem to want to engage with a grease nipple rather than a nozzle.