[BugBrother]

I doubt that life quality is better in USA. But the money is better -- and your local social environment is what decides if you like living somewhere, anyway. (Tell me if you like it. :-) )

A suggested plan, with small steps:

Try the waters with Scandinavia/EU? If you travel by Finland from St Petersburg, you can get an EU VISA, right? Then you can do interviews etc in place. But maybe not for Britain? I think it is easier to move to the EU if a company wants to hire you, than getting a Green Card (disclaimer: I only really know about Sweden and Finland for non-EU migrants). If you don't like it, try USA.

(I would offer you to stay at my place and look for jobs, but I'm not in the North right now.)