the JBL GTO4000 will be great for you i think. i have 3 of them in my car an they are great,
Bassicly...
600w rms
300w rms 2 ch bridged @ 4ohm
50w rms 4ch @4ohm
75w 4 ch @ 2ohm.
around £50 from most online stores ect.
a good lot of dials to twist to set it up ecaxtly how you want it. i have 1 for my components and 2 for the subs.
and had no problems. also have an electronic guage to say how the gain is working per bridged channel so 2 in total and looks great when its statrs flashing up anf down the levels.
defo a best buy.