I am starting in IDPA shooting. I have shot a lot of Bullseye and PPC using my custom .45 1911. Will use this for CDP. I have a Beretta 96F in .40 sw but would prefer using a 9mm in ssp. I like the Glock 17--and do not particularly want to use the model 34--but wonder if the adjustable sights offer any advantage. The price difference is only $20 but I have read some negative comments about the durability of the Glock adjustable sights. Anyone have any thoughts on which one would be better, if either? BTW I do this just for fun an friendly competition. My serious competitive days were in bullseye. Thanks a lot.