You can install Adobe Reader! Probably still bloatware by Android standards but at least you know it'll render consistently.

For desktop, I heard a rumour that Firefox (or was it Chrome, I forget??) were planning a built-in PDF reader for viewing documents on the web. Can see why - I use Adobe Reader on Ubuntu and it's not the most stable. I'd use another reader but (a) some sites don't play nicely (see above) and (b) they don't open the PDF inside another tab