Solas Titan Prop

[sidelock]

I have a 3 blade SS 13 1/2" x 17 Power Tip Ballistic prop on a 1998 Yamaha 115 that came with my 1975 18 SF when i bought it and although my WOT is 5500 rpm as per Yamaha's manual, I don't think its a good match and it seems to take a little long to get on plane so I'm seriously thinking about replacing it. I don't know what my top speed is since I don't have a speedometer nor a gps on the boat yet but next time out, i will take my car gps & see if i can get a speed reading.
A very knowledgeable and experienced forum member suggested a Solas Titan 13"x17 in a 3 blade or a Quicksilver Trophy Plus 13 1/4" x 15 in a 4 blade and I was wondering if anyone is running these props on a similar set up.
I'm not second guessing the advice given to me, just hoping to hear some opinion from someone using the same set up before I decide which one to order .