Love Connecting Threads their prices are great. I like to buy charm packs in groups of three or four of the same fabric line.
You can do alot with them. Also will buy additional yardage for borders and binding if I know I will make a quilt from a line.
Some of the packs like polka dots and stars are really useful to use as matching fill ins for blocks.
Have not done the kits yet but sounds like a good idea.