Cushenden is beautiful, but there is just one road in and out, across the glens and if its bad weather, you wont be going anywhere for a while . Also nothing there, a pub and a tiny shop. Its a tourist destination, national trust
Carrick is close enough to Belfast to drive in and out of with ease and has all the shops and restaurants you would need plus puts you in a good position to travel anywhere in the Provence with relative ease
Ballymena is just a skip to both Belfast and International airport and the ferry ports. Busy wee town . Obviously not the range of shops you will be used to, but again its 30 mins into Belfast and hour into Derry/Londonderry
We moved over 18 years ago, my DH is from Armagh, my parents are from Donegal. We have moved to North Antrim, the Triangle area. Once we get onto the A26 we are a skip and a jump to anywhere really. Traffic is nothing like England, 30 miles takes 30 mins, give or take a few tractors :) We chose here because DH remembered his holidays in Portrush, I needed to be close to a train station and a hospital so thats how we chose. We are really rural, we have primary schools but the kids have to travel to Coleraine/Ballycastle or Ballymoney for high school, which means long days for them, and parents needing to drive them to the nearest school bus pick up
I love it here, wouldnt live anywhere else. It did take a long period of adjustment , life here is completely different from back home. I was talking to a family today, the grandparents had been here a while but the kids and grandkids only a year - from Manchester . The Grandkids - now finished primary ready for high school in September love it here and have settled in well. Said to me they were preferring the schools here, have made good friends and love that they have the lifestyles they have now - lots of sports, lots of outside activities and of course, only being a spit away from the beaches here