I am using IETester for testing web sites with IE. I find it quite frustrating that it crashes frequently. More importantly, it does not seem to be too reliable. Sometimes, a site looks broken in IETester's IE8 but looks fine in real IE8. (I suspect that HTML5Shiv didn't load correctly in IETester at times) Anyone experiencing the same problems? What alternatives do you use?
I once resorted to using Windows 7's XP Mode to run IE7 then use Windows 7's IE8 (meaning) that I didn't upgrade to IE9 :( also I wont be able to test IE9... I think that setting up many Virtual PC's for each browser will consume lots of resources (say I have a Virtual PC for each version of IE ... or is there another way)?
Even if I use those Web Services for Browser Testing, I will be missing out of Debugging Tools like IE8's Developer Tools or IETester's DebugBar (I know they are nothing compared to FireBug but its still something)
I can confirm your experience: IETester sometimes deviates from what the "real" browser shows. I have seen this even with pure CSS constructions in simulated IE7 and IE8.
I have no own experience with them, but MS offer virtual machine packages for the various versions of IE. They migh be worth a shot, I've been planning to give them a test drive for a while. They run their native browsers and are bound to be 100% reliable.