tough to decide...
I tried the 1.5mm FO front sight and had some trouble with me being able to shoot it accurately..
I switched both my SP01s to the black competition front sight and serrated the blade...
I shoot this sight setup very well...and have no problem with it...
since Angus now sell a 1mm FO front sight..I am planning to buy one and give the smaller version a try..
every shooter is different and how your eyes line things up will be different...my suggestion would be to get both and try them out...I would think you would like the FO front sight..as most people tend to pick it up quickly and are able to shoot them well...for some reason I was not able too with the 1.5mm version...I am hoping I might see some difference with the new version..
here is the sight picture with the plain black