ZioPera4316

I've been looking for my first street trial and the best option is a onza zoot pro that's black with purple graphics, but I've heard that zoots often break the chassis under the seatpost, is this right? In case I shouldn't rely on that zoot would I be able to do street trial on a echo mark 5 that's the second option?

I've always wanted to do street trial, but never had the bike, I only have my dad's trial motorcycle that got me into the trial disciplines and an old MTB and I can do surplace and a few rear wheel hops on it. Now I wanted to get myself a street trial to do things properly but the thing is I'm really on a small budget and the best offers I found were for a onza zotta pro (black and purple) and a echo mark 5, both in the picture and both for £335. If I want to do primarly street trial should I go for the onza that's a proper street trial but seems very old or should I go for the echo that's a bike trial but it's in literally perfect conditions? Also could someone explain to me what's the difference in wheel sizes? (I'm 1,68m tall)