Rezza

Hey everyone I am new to SMD forums. I currently have a 18in FI BTL in my 2001 Isuzu Trooper. I am powering it from 2 AudioQue 1200D amps. I was considering just getting 1 amp instead of having 2, I went by a car audio install place and they told me the best amp would be the MMATS 3000.1D. Now I heard it is an extremely good amp... but it is around $1000 and that is a high price for me now. Is it even worth the extra money from what I already have now? Like will it really be that much louder? I already get insane roof flex on low songs like On My Level, Trunk Bang, and Hypnotized (Slowed Down). What do you all think?