Quoted from rai:I hear Porcupine Tree is supposed to be like Floyd and I was reading something of Radiohead is supposed to be great.
Porcupine Tree was incredible, easily my favorite band of the last 20 years. They did trippy Floyd stuff to metal, to progressive.
I would start with Lightbulp Sun and Deadwing. Those are the two best. Shame they are no more.
https://www.amazon.com/Deadwing-Porcupine-Tree/dp/B0752Z38G2/ref=sr_1_1
https://www.amazon.com/dp/B07532DJ5Z/ref=pd_mp3_als_qp_pa