User Agent String spoof suggestion for low bandwidth/resource env?

Hi all,
tiny netbook running windows 7.
Some massive javascriptey pages take a while to load, and while usable, aren't very smooth.

Anyone have any suggestions for user agent strings so that I get redirected to mobile versions of sites?

My main issue is finding a User Agent that identifies as mobile/tablet but also allows flash (on Youtube) or HTML5 video, as opposed to using the RSTP thing or whatever it is.

I'm using Opera Mobile's one at the moment. Seems to be mostly good!
Opera/12.02 (Android 4.1; Linux; Opera Mobi/ADR-1111101157; U; en-US) Presto/2.9.201 Version/12.02

My actual browser is Firefox, though that's not that important.

Anyone know of a mobile user agent that allows flash?

thanks ~

Well, if you use Firefox on Windows 7 you might consider using such lovely add-on as NoScript. It blocks all scripts out of the box, but you can add needed websites (like youtube) to the white list.