I use SSDs in literally all the PCs I use regularly, we've also moved all our PCs to SSDs at work as well. Off the top of my head I must own at least 8 different SSDs! The difference they make is massive, both in terms of general responsiveness along with durability which is a particular benefit in things like laptops. I've found that often, for general office/home use, an SSD will bring a more noticeable overall speed up to a PC than upgrading the CPU would for around the same price.
Whenever I've installed SSDs I've generally just done a clean OS install as I take it as an opportunity to start fresh. However, there is plenty of free cloning software that will let you copy your hard drive to your SSD so that you don't need to reinstall.
As far as which make, I have a pretty large mix of different brands from over the years however nowadays I tend to stick with either Crucial or Samsung as they are decent, reliable drives that are competitively priced.