I had a shockwave, and really liked it, you flip a switch to go from regular battereis to lipos, its a great boat and prety fast, I did fun a seven cell in mine but the packs did get really warm, I am still using the 2.4 system in my other boat. Just make sure you tape your hatch, I also glued some foam to the hatch and radio box cover becasue they can come off and they will sink. It had pretty good get up and go for a single cell boat.