I like the Blaze
I have the smaller size Blaze, the Blaze 6.9, and I love it. It is more river runner than playboat, but I am more of a river runner than a playboater. The boat is comfortable, easy to roll, surfs well, and with proper technique (which I don't have) stern squirts, spins, and cartwheels well. If you want a boat that leans more towards the playboat spectrum, I would pick a different boat. But if you want something that you will feel comfortable on class IV and is still somewhat playful, the Blaze is a good choice.