mobile

so a month ago i had a massive boo boo and actually managed to trap my phone in the car door, unfortunately this has smashed the front glass and the LCD, I've found many LCD replacements on eBay and several guides on YouTube, i feel confident enough to do it, however I'm just wondering, which LCD with digitizer do i go for, I've seen some saying they have retina i know this is resolution but would it be possible to get a higher quality LCD or will they all be the same quality, i don't want a cheap Chinese copy, i still want the phone to say "Sony" at this top as it would bug me without it,
and also finally, will my phone retain it's water resistance or would this be lost?

Thanks in advanced :)