Crocheters - I need some yarn advice please.

[AmberGamble]

I want to make this. I've bought the pattern.

The materials part says:
I use medium weight yarn, 3.5 skeins at 251 yards each

Can anyone suggest where to start with yarn?! Up to now I've mainly worked with Stylecraft and RICO cotton (bless Attic 24) - I'd like to branch out a bit more but don't want to spend a fortune (although happier to spend more than I do on Stylecraft and RICO)!

The Grace hand dyed has just been reduced to 3.99 a hank if anyone wanted some - only 3 colours to choose from though, from Tangled Yarn. They stock lots of lovely wools. I might have a code too if anyone sends me a pm.

Mine was a similar price from Blacksheep but they sold out pretty quickly.