Lets start easy, no use shouting names at him! go to a decent trials web-site e.g. tarty-bikes.co.uk have a look at the rims, come back tell us which one you would think about getting and we'll tell you what its like, many people advising echo's, i've never run one, i have a onza ronnie and keep denting the sidewall, and get it well built by a recomended dealer.