High end (tubulars mostly) tread is glued on the casing and the distortion of rollers can make them - come apart.

For plain, classic, not fancy, well built and will last a long long time...Kreitler Rollers

There are rollers that have edges that assist in keeping you on them. So when my kid watches movies while riding - he likes those.

I like the 3.5in Hot Dog if you are serious about roller riding - and on a fixed gear.

Many folks like some resistance thing. Trainers seem better suited to that.