Spiderjack 2.1 or Lockjack Sport ?

[PassionForTrees]

Think I am going to give the mechanical world a try, I have narrowed things down for me to the new spiderjack 2.1 or the older version Lockjack sport. Anyone with experience on these? love to hear the pros and cons.

 

[Pelorus]

Have climbed on a buddy's lock jack a couple of times; just enough to develop a mild dislike towards it.
Prefer both my HH and ZigZag to that thing.