Savannah Supreme is fairly stable (enough to buy one anyway). It does sometimes produce a green (Savannah), but not like some of the streaked hosta (they are called streaked rather than striped in the hosta world).
Ice Age Trail is getting reasonably priced.
If you like a similar look, Ellegan Fog is stable and really different than the solid colored and varigated ones.
Keep your eyes open. Most of the hybridizers are working for stable streaked right now, while others are working for bringing red from the stems and beginning of the veins into the whole leaf. Prices are becoming more reasonaable (sooner) now because the new ones go directly into tissue culture and you get a really nice, say $35 plant right away, when it would have taken 4-5 years for the price to come down to that.
