I always use iPF.
While the browser offers more functionality, do I enjoy the simplicity of iPF, there is no extra info, no signatures, no ads, or any of the useless text at the top of the page, there are just the posts and user name. Quite relaxing. Going back to the website, do I feel flooded with things I don't even remotely care about.
If somehow, it is necessary to look back at previous posts, just tap on the bold thread title within iPF and it opens the thread in iPF's inbuilt browser.