I wouldn't choose not to buy based on an ugly or pretty website. I don't think anyone said that. However, their problems are much deeper then ugly or pretty. However, how a company presents itself (i.e. image) does play into how a company is perceived. To deny that fact is silly.
Yamah's LOOKS better but also has it's (major) problems (navigation and a clunky refreshing menu). With that said, I still bought a Yamaha, so the fact I think their website sucks too (though 'prettier') didn't affect my decision.
And, if you think that a decent looking website costs a lot of money, you'd be wrong. They CAN cost a lot of money. But, heck, they could hire some college student (and pay him off with a avr3805) for a better, more functional, easier to navigate site. I'd probably do it for a 3805, or some other equipment!
It doesn't need to be flashy or over the top, just more useable -- and a bit more pleasing to the eye.