You are correct, I've used many Galfer, EBC, and OEM over the years, and my 98 ST1100 didn't care what pads I used either, however, the ST1300's are very picky about brake pads and issues.Fair enough Larry, sounds like the majority of your experience was with the 1300, mine is with the 1100. May be that a lot of what you've seen applies to the 1300 specifically, but not bikes in general, thus your above comment that "I only Recommend/use OEM for this one Model bike".
On my ST1100 I've used OEM, Galfer, EBC, and lately Volar, and had no bad experience with any of them.
And yes, the majority of my service stuff is now ST1300 specific, due to all the parts I keep in stock, and forum members who keep rolling into my driveway at odd hours and on holidays and weekends, it helps that I have parts that I know I'll need.
And with 4 to 6 of these in my garage at any one time, it makes things easier.