Welcome to SRP Kentington. You've already received some great advice from fellow members, so I won't repeat was has already been said. But judging from your quote above there might be some technique issues that are making your shaves miserable. First, as straight shaving is an acquired skill, don't throw out the Mock 3 quite yet, as you will still need it for touch-ups while you're learning. If you are getting so much irritation that you can't shave for a week (don't worry, I've been there too) you might have a sensitive skin problem as well. Throw out that vibrating razor and stick with either a regular Mock 3 or a 2 bladed cartridge. A badger brush and a good soap/cream will do you good as it reduces hand contact on your face pre-shave (and lathers better than your hands ever will). Have you tried mapping your face? In other words, figured out which direction the whiskers grow across your entire face? If so stick a with-the-grain pass in all areas and only touch up certain spots x-grain or ATG if you are bold. These are techniques that will help to break bad habits BEFORE you start to shave with a straight, and before you know it you can perform multi-pass BBS shaves with a straight razor of your choice. I hope this helps.
Ryan