There's a wealth of stuff, what you need depends obviously on your budget and your needs.
I've got two pairs of textile trousers, but 95% of the time I wear my Draggin' Jeans, and I've got two pairs of boots - a 'full size' set, and a pair of Puma ankle boots - the Pumas are so comfy, and while not as protective as the taller set, I do feel pretty safe in them. They're very well put together, and I can wear them all day. They were fairly expensive for what they are though, £140. I use them almost every day though so well worth it.
Up top I usually wear my Frank Thomas leather jacket, I really think it's nice for what it cost (£180), it's very nice quality for the price I paid. I intend to get a set of leather trousers too at some point, I'll go FT for them too.
On the other hand though (as it were), my FT gloves are a bit gash - had them replaced already because the cuff velcro let go of the leather it was stitched too, and they're just.. a bit cack. I get the feeling they might come off if I bin it, and I don't like that.
For around town/commuting and so on, the kit that I usually use is bang on, imo, a good compromise between safety and practicality. I can get off my bike and walk around in my kit and not feel or look stupid or uncomfortable.