I'm wanting to get one for my grandson, but I don't want one of the large ones that can be around 750mm in length, but then the smaller ones are only about 350mm.
Doesn't seem to be much in between!
Also, from the reviews, it seems that the cheap ones are just more Chinese junk (junk is a play on words do you see).
The other thing is that it looks like you would be lucky to get more than 5 minutes playtime on one charge, so it would be necessary to have another two battery packs I think!