my knickers are fine thanks m8,as said above enough said!!
each to there own eh.

but i would bet anyone that if i had 2 cars side by side,1 with 23mm cyl and 1 with 25mm cyl,not anyone would be able to tell the difference by driving both the cars,i have tryd it both ways.

the 23mm cyl is still a neater and tidier mod in my opinion,neater 1 piece pipes and no joining involved,and equal fluid distrubution to each brake.