You have a real good dentist Bann, lucky you. Don't go anywhere else. That is a real good combo of materials you should be happy with for years to come. Dentists that research material are few and far between from my experience and I'd say, your dentist has done that.

Herculite is a glass ionomer if memory serves me well and a one step bonding agent should not contain much epoxy-type resins, those are generally the 2 part bonding agents.

That is pretty much the combo I was searching for around here last year and couldn't find. Around here they mostly use the cheapest fastest whatever they can and charge you top buck like you just visited the Ritz-Carlton. It's a big problem.