If you are using the Firefox browser you can add a whole range of maps to the beta maps by adding user scripts. You can add a little widget called Greasemonkey which makes it really easy to do this. Currently I have OS, Bing aerial, google, google sat, google hybrid and google terrain plus a couple of others too. Really easy to do and works perfectly even on my very very old PC. There are also loads of other scripts to enhance how you view and use the website. As for the debate about switching browsers, adding firefox takes about 5 minutes, is free and you don't have to set it as your default browser. The scripts can also run in Chrome.