I was most likely going to either put egg crate or acrylic on the bottom, the tank is going to be glass and im not worried about the mantis hitting the glass. The smasher just is way cooler due to the fact that it just breaks open things with ease, i also want to try and put a chromis or damsel in the tank to have something in the water collum. The spearer would just kill the fish. I narrowed the selection to either the peacock, purple spot, orange spot, or the tiger mantis. On bluezooaquatics.com all of those mantis i listed are on there, the peacock and orange get bigger and have a min tank size of about 25gal, the purple and tiger only get 3in and have a min of 10gal. The most colorful is defiantly the peacock which catches my eye. The other 3 are still nice looking but on the website nothing states spearer or smasher, anybody have a clue?