What do I think you should do?
OK so what are you saying? Not sure what you think i should do.
I think you should re-read this thread and actually try to comprehend the answers you've received. They were good ones and aren't worded so it takes an EE to comprehend them. Given a little effort on your part, you should be able to understand them.
If you still think the numbers that show on the receiver have any real relationship to how much power the receiver puts out, then obviously you haven't.
Then, once you realize that your questions were answered, you'll be able to decide for yourself what you want to do and if your expectations are realistic.
Buy, hey, it's your money and you can spend it as you like. But, unless you know what you're spending it on, and why, it may not provide the satisfaction you desire.