These are a versatile and good sounding bit of kit, paticularly so given the low cost. I used the 2x4 for a couple of years or so, before moving to the 4x10 HD, which is considerably better sounding IMO, albeit at a cost. It will also give you remote volume control as a bonus.
I'd recommend the 4x10 if funds allow.
“Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”
Hunter S Thompson