Hello I need some help deciding between two Hartke Kickback combo. amps -- from anyone that has experienced them in a gig setting. The combo. units under consideration are: Hartke Kickback 15 120 Watt 1x15" Bass Combo (not many reviews) Hartke Kickback 12 1x12" 120-Watt Bass Combo (has received very favorable reviews) Which one is better for the following applications: - 5-string bass. I use the 5-string more for efficiency (two octave range in a smaller area) than for the extended pitch effect (although I use this sometimes only for last-note-of-the-song effects). I actually use a D-tuner on my 5th string to get a low A or low Bb only for final effect. That effect is mostly carried by the FOH subs. - Behind-the-back thump effect while I use IEMs (they have some leakage so should work out to hear the cabinet). - Better EQ and sound for classic rock (for band mates) Thanks for your help. I'm hoping to get to GC to try one out if they carry them.