That really depends on what you are looking for.
A good rescue will only allow you to adopt an animal you can handle. The savys I have had have actually been reasonably tame here. A good rescue will also adopt a healthy animal. They often do vet checks. All my savys get fecals and blood work before adoption and are maintained for at least two weeks to ensure healthy feeding and longer usually than that.
However most rescues only have stuff like savys and niles. Nothing fun. On occasion they may get something different in, but on the general whole the majority will be savys...
Be sure to check out the rescue.. There are TONS of reptile rescues starting out right now and not all are good folks... See if they have references for a vet clinic, animal control, or humane societies. A good rescue will NOT mind being asked for references.
Good luck with what ever way you go.
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Cindy
PHFaust
Email Cindy