Radiohead's debut is sub-par in comparison with their other works. But then again Pablo Honey would have to be a mountain to level up to masterpieces such as The Bends, and Ok Computer.
Pablo Honey is always down, despite cheery introductions from from tracks I Can't, Prove Yourself, Lurgee, Blow Out etc... This album with help from Creep also gave Radiohead the "depressing" label which ignorants use who fail to listen to the true noise of this wonderful band.
For any Radiohead fan, I don't need to tell you to go buy this as you'll already have it. As for any new fan I would suggest OK Computer as a good introduction, and then work backwards.