Mantis Tiller Electric Vs Gas . Packs the power to till up existing garden beds or break ground for new ones. Electric tillers are usually front tined only driven by the. MANTIS TILLER / CULTIVATOR REVIEW GAS vs ELECTRIC WHAT SHOULD YOU from www.youtube.com Now, with an electric tiller, i don't worry about it. The mantis tiller starts at $129 for the electric corded model. Both echo and mantis are mainly similar to each other.