I have some Halfords proffesional tools, some snap-on, and other stuff like Mac tools and got the Halfords proffesional set.
I would say for a enthusiast the Halfords pro is fantastic, they will take a beating and seam to last very well.
Lifetime guarantee, nothing has broken on me yet, 2 years down the line, can't say a bad word against it
You would also require a few extras such as:
Deeper sockets
Breaker bar
Longer extensions etc
Sukhi.