Sorry about your loss. I have two sea stars that have been very easy to care for and seem to be growing well. I'm lucky as I just bag floated them and dumped them in and they survived. Beginner's luck.
However, I've never tried this variety. I've heard that they can be very temperamental and that they should be drip acclimated and never exposed to air.
If you want to try again, I'd go for a chocolate chip. They are common and seem very hardy. It out all the time, and spends it's day climbing glass or rocks. Although it's rumoured to not be reef safe, I've never seen mine bother anemones, zoos, or mushrooms.
Personally, I find serpents a little creepy although I've gotten use to my brittle star, but you'll rarely seem them except for maybe a leg sticking out.