You can also try Camskills and Mytyres for regular rubber or DemonTweeks if you're after something more sporty. Both Camskills and DemonTweeks are usually cheaper for me than Blackcircles.

No one brand is best for handling - usually a garage will tell you what's "best" to get rid of stock.

What's actually best is much more subjective and down to what you like the feel of.