Zodiac,
I'm a tool snob, so you should probably ignore me. But I am also a bit miserly when it comes to tool buying.
I would suggest going to a car boot, take a tenner and you'll get all the chisels you need.
It should be said that bevel edge chisels, while an improvement over firmer chisels, are not so superior that they render firmer chisels useless. I believe also that firmer chisels tend to be made of better steel due to their age.
For the same reason I put forward in
this thread I also prefer older chisels. After the old chisels were made they were left to stabilise for a long period before grinding flat. This way stresses came out.
New chisels (especially mass produced ones) don't do this, and to counteract it they are made thicker and heavier (more metal = less warping in theory)
Personally, I can't speak highly enough of (OLD) Marples, and I have a toolgasm whenever I get an I. Sorby (basically the same thing except the name). Both of which are mainly seen in bevel edge format.
Other than that, anything with Sheffield stamped on it is generally a goer!
Car boots are a goldmine, you just have to keep going as you can never be 100% that you'll find what you want.
Fraser