Hello all hope you can help I have a 2005 Yamaha RSTD with a wide open plastics Fairing. Running a JVC KD R720 head deck and 4 Polk Audio MM 521 Speakers. Looking for a good amp I have been told either the Arc Audio 125.2 or the Bazooka CSA-4 XA MC. I have also heard of the Elf Audio and the Vibe Audio mini amps. Can anyone please point a low experianced person in the proper direction. Thanks alot all. I am looking for loud CLEAN sound and I have very little knowledge in this field.