Which skimmer

Have AG with a lomart skimmer.
Great skimmer since it has the extra input for vaccum. But the lomarts output barb is only about 1 1/4" instead of the normal 1 1/2".

Thinking of when I replace the liner I would patch the wall with some stainless sheetmetal and then re cut for a different skimmer.

Any suggestions on the best skimmer and if you think I am just making extra work.

Thanks