Why not strapped or multiple 5500s? It wasn't too long ago that anything over 3k (less a few like the JBL Crown) just wasn't very reliable. I haven't heard anything negative about the 5500's, but we are starting to venture into amplifiers that just aren't going to be too stable.
Bought from - Hazardous0388 (4 db Drive 2000.1s), Psychoacoustics (4 Powerbass XA 3000'ds), and blackedoutavy (PPI A200)
Sold to - D-Rew (Knu 1/0), d77543020 (Knu 1/0), F1McLarenAGR (Audioque 4x90), and SacTownBully84 (Knu 1/0)
Traded with - SacTownBully84 (my xa3kd for his xa1.5kd + cash)