Thanks for the input guys, I appreciate the advice. I was leaning the same way, for some of  the same reasons you both mentioned. The Zoo seems like a little better value and it’s also closer to home and I won’t need to get it shipped. Yes, I was definitely planning to change out the chain right off the bat, and possibly the handlebar and pedals, too. The seller isn’t the first owner so the history is a little more unknown so I figure it might be prudent to swap those out with fresh new parts. 
  Saving some money on the bike up front will definitely help with a few tweaks and upgrades as needed. With any luck, I’ll pick this up this weekend. The seller is about three hours away from me but willing to meet up about half way. I’m trying to set that up for this weekend. 
  Next I’ll have to see what I still remember how to do on a bike and what my 40 year old limbs can handle!

£££Wanting a 26 inch mission reefer or onza t raptor got to be good condition no dints£££  live in westyorkshire thanks guys 

£££Wanting a 26 inch mission reefer or onza t raptor got to be good condition no dints£££  live in westyorkshire thanks guys 

I really appreciate that your "streety" stuff always has a little something unique to give it a very trials flavor, rather than just the hack wannabe bmx on 26" (or larger) that some folks do.

If you go for the RockMan, please change that half-link chain immediately. To be fair you should probably do that on the Zoo too, but half-link chains are not ideal on a trials bike. The bar/stem on the RockMan also looks pretty random. It's fairly short and low for a frame with that geo. Out of the two, I'd probably go for the Zoo just because it seems decent overall, but is also a good amount cheaper. Second hand bikes quite often turn into moneypits as you find bits and pieces on them that could do with being changed, so having an extra $500 would be useful. The Zoo bikes are decent as well in fairness. The only 'problem' with them is that they use a somewhat proprietary BB setup, so you'd have to get either the Echo or Trialtech Spanish BB for it if you need a new BB at any point. That's not the end of the world, but it does mean further down the road spares might be trickier to get hold of.