I currently own two EB Sterlings, and one P Bass w/ PJ configuration. I'm looking to expand my tonal pallet and add a 5 string. I seem to have whittled it down to two choices; an older Yamaha TRB5 or a used Warwick BO Thumb 5. Please let me know what would be a better choice to expand my range of tone and color. Also, let me know why. I look forward to your input.