Hi David... I would highly recommend a Kickr for a wheel off or Kickr Snap for a wheel on trainer. Both have Bluetooth and ANT+ connectivity and are Smart Trainers. Therefore you need a Phone Tablet or laptop to get the best out of them.
If you really like Indoor training and want to take.a step into virtual training world's then these are perfect for Zwift.
If you want something simpler any if the Elite range are pretty decent. And unless you are confident or think you will like learning to be... then rollers are probably quite scary. They are great for cadence training, warm up and warm down kit that you can throw in a car boot etc. But most don't have resistance and most are not "Smart". I know there are some rollers that are both smart and/or with resistance but not heard if they are as good as more rigid wheel in / wheel off trainers.
Happy to chat if you have some particular models in mind.