My first set was the HF 15 dollar jobber. At fifteen bucks, theu were a great deal. Carbon fiber of course, but worked fine. The HSS tools will achieve a sharper edge and hold it longer, but will likely be a bit more. I now have the Crown 8 piece set (Along with a few other Crown skews and scrapers)now which is close to 300, but an excellent investment down the road. At the prices shown on the PSI website for HSS stuff, I don't think you can go wrong. Here is the kit I was referring to:
http://www.crownhandtools.ltd.uk/products/hss8piecewoodturning.asp