I like silicone ones. I bought the first ones over five years ago, star shape and flower shape. I have two loaf ones which have ridges underneath for stability.
I always put it on a tray first, and I do not need to grease them.
They can be washed in the dishwasher. My youngest granddaughter wanted a flower one which looks like a chrysanthemum, with lots of petals. Bad idea. That's the only one where the cake sticks.
I always leave the cakes in until they have cooled down. Then they come out really easily.
I have bought a silicone breadmaker today from Lakeland. My grandson likes making bread but the machine sprang a leak. You are supposed to be able to mix, knead, prove and bake in the one container.