What final stage?

Hi, I’d like to buy a new power amplifier for the subwoofer. It should leave at least 300W RMS and not be a junk. Nevertheless, I’m looking for a cheap power amplifier, which is worth its price. I’ve been looking for some out to listen to your opinions. I’ve read good for example from the Carpower Wanted, but the situation at Ebay is rather short at the moment. So I’m looking for other power amplifier 1 Is this the same carpower that also produces the Wanted ode What do you think about this one? End level 2 It looks like a junk. Is it also? End level 3 Or this one? About Ground Zero I’ve already read good, but also this end level looks like a junk somehow. Besides, it has only 260W RMS. End level 4 Or a blue point even though they shouldn’t be so great? I found another Alpine and a Xetec that I didn’t find so bad, but they only have 200W RMS. End level 5 What about a crunch? But it only has 280W RMS. So, is there IRGENDWAS reasonable with it? I’m also concerned about the fact that I don’t want to have an auction that I have to pay attention to and where the price is then uncertain. mfg Sven