I've been using the Total Volume Foam* and Final Shine Spray*, along with the Paddle Brush and I've found the three work really well together, though you could easily use them alone if you prefer.
I usually use my tangle teezer since it's gentle on my hair, which isn't in the best condition lately and is really in need of a chop. That aside, I've got no complaints about the paddle brush, it didn't tug at my hair like I thought it might, as it is quite heavy, in fact I found it really easy to control and it didn't get tangled at all. It's great to blow-dry larger sections of hair and leaves your hair straight and sleek. I could have got away with skipping the straighteners, it really did work that well.
The Total Volume Foam added volume to the roots and made my hair look thicker which is exactly what I want. Sometimes after blow-drying my hair can look a bit flat or frizzy, but I was really pleased with the volume and how sleek my hair looked - though that's partly due to the paddle brush too. It's recommended you use 2-4 pumps spread evenly through your hair though I only used a couple to avoid any excess product weighing down my hair. I needn't have worried though as the foam is light and fluffy - it smells pretty good too!
Final Shine Spray added a subtle shine to my hair and helped to tame any flyaways. It's like a lightweight hairspray and a quick spritz can be used to sort out static. It doesn't offer any hold, but I usually opt for Fudge Urban Vanilla Coconut Hairspray to keep everything in place anyway.
Looking on the website, GHD offer a range of products so whether you like sleek straight hair, enhanced curls, volume or that messy undone look, there'll be something for you and it's all really affordable, so there's no reason to not have a good hair day!