I was also in one of those sections where there were three of us of approximately equal abilities - each had different strengths, but we'd played together from 5th grade on through high school, played small ensembles at contests together, and remained friends. We just passed the solos around based on whose strengths best fitted the piece. When it got to the point that we had to have challenges because of some lower classmen's ambitions, I just switched to flugelhorn for the duration of the concert season (best solos of the lot) and let the other guys deal with them. We still remained atop the section, and we still didn't care who sat on the end of the row at any given performance.
More recently, my granddaughter went through a series of constant challenges - a kid who placed lower wanted to sit next to his friend, so he challenged her - and lost - every week until the band director finally called a halt to all challenges. A little ego's good to have, but it sounds like the OP might need to work a little harder on earning the right to have such a high opinion of herself.