I think I like it better without the white. That way the blocks form a nice secondary pattern. It's bright and as you say probably not for everyone. But I think this quilt will be a real beauty.

I would use sashing.

I like them without sashing. The white just kind of blahs it. Maybe a brighter color would work if you really want sashing.

Well...I am on the fence. I think I like it without the sashing.
However....as others have suggested...a thin dark sashing might look better.
Very nice work :)

I like the bright colors, and the way they swirl into each other without sashing.

I really like the white sashing. It celebrates the bright colors & shows off the patterns in each block better. I like the brightness factor! It's a fun, happy quilt! :-)

I like the quilt without the sashing, but sashing will frame the blocks and tame the bright swirly pattern. I didn't care for the white, but any of the other colors would look nice. I am partial to the lime green, but any of the other colors would look good too. I would have a hard time picking a color. The quilt is going to be very pretty.
Sue

I was given 100 crocheted grannie squares of all colors, solids and varigated and ended up crocheting a black border on each and then using black yarn to connect them. The black border around each color made it very dramatic and flattered every square, every colour. I'm voting with the others who are suggesting a very dark sashing separating the blocks.

I vote without it kind of give it a kaleidoscope kind of feel. I think sashing would take that away IMHO

What a happy quilt this is gonna be! I'm thinkin' that the black sashing will really bring out the bright colors in your blocks. Why don't ya take some of 'em ta the LQS & audition different colors with 'em? You'll find out what you like & it'll be great!