I've got a similar set-up. What is your budget? I'd say for a budget unit, shure 97 (GRIMACE where are you?). Stepping up, I'd say Goldring 1042gx. Clearaudio doesn't have the "bite" that a rocker is looking for. Personally, I'm not a Bluepoint fan, especially for the money.
Sorry Elevick, I can't answer this one. I can honestly say I've never listened to a rock and roll album on my table. Well, Us3, but I think of that as 3/4 jazz anyway.
But for what its worth, I have a Star Saphire with a AQ PT6, which I believe is similar to the Sumiko arm (both rebadged Jelco arms?). I'm using an Audioquest OC-9 cartridge wich I like, but it might be too smooth for R&R.
Grimace and Fap are on the mark. I have several shures including the Ultra 500. Rock is what it loves, does jazz well too. Tracks extremely well and with rock that is very important. Very solid dynamics.
If it sounded muddy, did you have the VTF too heavy? I had a Shure M97xe just prior to the AT and found it be somewhat sensitive to variations in tracking force. It gets poo-pooed here a lot as not being hi-fi enough, but I found it to be very pleasurable to listen too. I could see it being a good choice for pop/rock records.
But then if you were using a v-15 before an m97 would be a step down I suppose.
Nagaoka JT-555 - crazy, biting fire guitars, loves dense music. Micro Acoustic 630/830. Very fast cartridge, scary dynamics. Audio Technica AT155LC - no need to care or listen - music just flows into you. Audio Technica AT20SS - to add body and wet dry and tipped recordings. Has soul.
Do you know the recommended VTF for the V15? I think the M97 was 1.35g on the low end, but again, I may be comparing apples to oranges, never having used a V15 myself. In fact, I think I might be only person on here who hasn't used one at some point.