It’s a STW cliche, but do try some – not one, but some – before you buy. Everyone’s first full susser* is the most amazing bike they’ve ever ridden, but ride some back to back and you may be able to pick up on the differences that will make your enjoyment even greater. As a great example I rode 2 of my shortlist back to back at Cannock a few years ago. One was a Yeti ASR5 and the other an Orange 5. Both were 5″ travel full sussers but they could not have been more different in character to ride. Neither were bad bikes but one suited me much better than the other.
Failing that, there aren’t really many bad bikes out there anymore. Whatever you get, I’m sure it will be a hoot.
*supermarket special excepted