Tesselata is my favorite of ALL pet roaches, they are cool , charming , and alot of fun. For some reason, they've always kept their $ value so you can always breed them and sell some to help support your roach addiction.
Javanica are def. one of the prettiest of hissers, stay small and produce alot of nymphs!
Gyna species in general for me have always been touchy and alittle iffy, maybe it's just not my luck with these. They are pretty though!