Receivers and Audio Components

So I am looking to upgrade to a new receiver. My top three choices in order are the Harman kardon avr-347 denon avr 2308 and the Yamaha RX-V861, all about the same in price and such. they all have video up scaling, while the denon and hk both have the dcdi chip don't know about the Yamaha. but then it comes down to the power, my main concern 55 /100/ 105 in order. now comes the question what in up with 55 watts that's half. the hk claims to have a high current what ever and I know that hk is more than reputable. but really 55 watts what's the deal.

HEY, any help useful I hooked up my Sony to "5" speakers, it was almost new hardly used. It flashed and then then the stereo bar went out.  It has power but nothing in stereo mode,cd. ect. I opened it up and replaced the little slow burn fuse. Unfortunately when I plugged it back in it blew the fuse out again. What happened to it, and is it a resonable repair. I do have soldering experience,so I think with some help we could get her up and playing again. "thanks for any help".

Hi everybody. I have to confess to doing a stupid thing. I imported a Crosley CR83 record player/CD/Radio - that was not the stupid thing. In my hurrey to paly with this wonderful toy, I plugged it in to an adapter [I am in UK], it came on, then went off, and now it does not come on at all. I belatedly obtained a transformer [told you it was satupid], but no joy at all. Can anyone advise? Is there a fuse inside the record player which may have gone?