What would be unique? When I was there, the only places to learn we're McCreery Aviation and McAllen Aviation. McCreery used 172's, and did not offer a multi engine rating. McAllen Aviation, formerly Edinburg Aviation, flies Grumman AA-5's and a cougar for their multi. The only other instruction in McAllen that i am aware of is Eddie Aviation, and he provides instruction in your aircraft. Harlingen has gulf aviation, but they also used 172's.