which excels at Rock and Roll

Very interesting reading all the posts. My main system (not the one in the earlier post) is JUST rock and roll also. My larger venue in my outside shop, 30X60' of which one third is devoted primarily for listening. 16' ceilings. Inside everything from motorcycles to excavators, mower, etc. How or why system sounds so great? It just does. Inside shop totally wrapped in 3/4" treated wood. 

Coda 8 V1, LA-4 pre amp, Bricasti m1 SE with network card, project CDT with LTA Linear power supply, nothing very high end cabling, A NEW from Tekton, specially made by Eric, special ENCORE with Italian woofers, and high end mid ranges with beryllium tweeters (all 175lb worth, my back will attest)   and a pair of SVS SB 4000 subs, system all balanced. Qobus via audirvana. 3 separate circuits for most of the equipment.  You should hear Thunderstruck, Nothing else matters, Stairway to Heaven etc.    

The reason I mention this, is, the earlier system I mentioned sounds great also, just wondering,  HOW this system might sound with a different set of speakers, especially with the speakers suggested? Again the FRITZ are wonderful!,  Just getting older and want to maybe try something a little different or better????  PS  I had Pine TREE Audio, build me a very nice A/B switching box for the system in the shop. A is the ENCORES, B is an older pair of Double Impacts, which still kick ass, but, only touch the surface of the ENCORES.  May end up just keeping the FRITZ in the smaller room and call it a day. Just curious I guess. Robert   Really don't know if the other speakers are geared for me?  that is the reason for the posts! 

@robshaw 

I recommended you audition Rockport Atria ii speakers. There is a pair here for sale at a great price. They are fantastic and would work well on your room. You can also give a corner setup a try in your square room to see if you like it better. Good luck! 

@ghdprentice I agree. Electronic / prog. music has huge soundstage, very airy and ,yes, dynamics with my planars and Rythmik sub. Example, I dont know how Radiohead engineers their recordings, but it makes my systems adrenalin kick in.

Certain jazz and most softer female voices sound wonderful too.

Hard rock, piercing guitars not so much. My past Kilpsch towers with horns seemed to handle rock better, but horns tended to fatigue.

I have to disagree that components equally reproduce music of all genre. That is the ideal, but in reality it is not true.

Let us consider this track by thin lizzy (one of my test tracks) with Brian Downey on drums doing his thing back during his younger days. Play this track at 100db+ and you couldn’t for the life of me (or for another 50 lifetimes) tell me these 2 speakers are genre agnostic and will fulfill this track the same way.

@ghdprentice @deep_333 The issue you are dealing with is that of a limited sample size. Rock covers quite a range and for every recording that seems best reproduced by a certain speaker I can find one that flies in the face of it. Classical is every bit as demanding as rock (with similar sound pressures); rock requires every bit the resolution as required by classical or jazz or folk or electronia. 

The logical fallacy known as a limited sample size is causing your conclusions to be false. Its a very common conclusion! But if you have a decent speaker (IOW, deep_333, the recording you chose is showing up one speaker more than the other) then all genres will play equally well. If the speaker is lacking, all genres will play equally lacking, although as you have found, some recordings will come through better or suffer more according to that lack. But it will not be universal across the genre! 

I saw one person asking (seriously) what speaker favored downbeat 80s new wave once... Sheesh!

If one is looking for the recording to sound the way the audio engineer intended, find the largest, most neutral speakers that don't overwhelm your listening space and supply them with the maximum power allowed. If you are looking for more punch, do as the professionals do and add a Behringer SX3040 sound exciter.