I did a bit of research and it seem unless you just want to shoot sunsets the soft grad kit would be better. I plan on getting the hard set at a later date when I actually get good with grads.

You can also buy ND filter but these will block out the same amount of light throughout the frame. People tend to use ND filters when they want to slow things down, commonly to show flowing water or clouds.
That seems like a good mix to me. In fact I was looking at David Noton's site today and he tends to use 0.9 grads along an ND filter (not sure about the ND). If you are going to get an ND filter I would have thought getting one that blocks out the most light would be more suitable, this this case I think it would be the 1.2. Another thing to consider is the sort of holder you want to get, I'm not quite sure what they do in the 100mm range but it's worth noting that you won't want to get a wide angle filter holder even if you will be using a wide angle lens all the time this is because the wide angle filter holder I have only has 1 filter slot.

Before buying anything try reading Lee Frost's Guide to Filters, I'm part way through and has made me rethink what I was planning to purchase a lot
Save your money and get LEE, I used to own all the Hitechs - dirty pinky purple colour cast on the NDs, 1.2 was better than the 3.0 as long as you didn't stack them
again GNDs were fine as long as you didn't stack them
Quick question - are the 100mm grad NDs the same as the Lee 100mm in terms of height of the filter, or do I need to look at the 100x150mm?
Cheers.
Faldrax said:The Lee Grads are 100x150 - HiTech will also do them in that size (but also do 100x100, so worth making sure you get the right ones)