Between the two I would do the Wildhare. Much better airframe for the first time gas pilot. They will stand up to some abuse.

Ease of assembly goes to the Hangar 9 though. Wildahre planes go together well but there are some things that are not explained in the manuals that are assumed that a person has enough experience to get the job done where as Hangar 9 manuals are well done with loads of pics and detailed explanantions of just about every step.

Now what would really help out is what engine do you plan to go with or is that another choice you want/need to make?