Here are the top picks that I'm familiar with:

'Sekimori'

A mounding dissectum with dark green leaves. The leaf shape and texture make it appear almost "feathery." Fall hues of yellow-gold are among the best of all the dissectums. Prefers sun/partial shade in well-drained soil. 3' tall x 4' wide in 10 years.

'Green Mist'

An excellent mid-green weeping tree of great vigor and habit. The branching pattern is beautifully balanced. The color and fineness of the foliage give it that soft misty look of spring. Yellow fall color.

'Waterfall'

Pale green cascading foliage repeats the flow of the waterfall. Heavily dissected lax leaves provide a wonderful compliment to a water effect. Slow growing, mounding and cascading form. needs protection from sun in hotter climates.

This one is yellowy-orange:

'Lemon Lime Lace'

Very delicate looking dissectem with bright green leaves in the spring and dark green in the summer. Yellowish orange fall color. Not a fast growing dissectum growing smaller than most dissectums at 6 ft.

You can see some nice pictures of most of these cultivars at this web site:

http://www.essenceofthetree.com

Striped maple not the best pic but they are much prettier in person

Here is a link that might be useful: look

here is one purchased as 'viridis' but that cultivar name has been dropped from use and might currently be used for any green dissectum if you see one labeled as such these days (or "viridis group").
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the time is right for nursery visits to pick one out for yourself in fall foliage color. mine have not started to change this year but we are close to first frost.

it is also beautiful and delicate in appearance in spring, too.
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Good advice from Kaitain4. I like Green Mist for its vigor as well as gold orange fall color. Filigree is another very soft laceleaf maple with gold orange fall color.

I know 'Viridis' has been dropped...yet I still see trees labeled with it at the nursery where I work. Is this laziness on the grower's part? We sell them labeled as they come from the grower...