Something that I have been trying out in PvP is the longsword. It has ok damage but not much poise damage, but has very good tracking; you can usually punish someone who is an avid roller, as you can catch them mid roll with the speed and tracking. Now, I never liked R1 spamming, but that's pretty much what this weapon is: Bringing a flurry of attacks without showing a window for them to react to. This seemingly impractical weapon has been very effective with the time I've been using it, and I would recommend it if you have a fast and aggressive play style.