Personally have never tried the 135gr. Not a lot of load data out there but a lot of guys love them. I started with 147s because that's the weight of my carry round. Once I found the load that has worked so well, just stuck with it. Try both. WSF works great with 147s(1st recommended to me by Bayou) and pretty sure someone here has some data for the 135s. I like the NLG style which is one reason I ended up settling on the SNS brand.
I've accumulated a good supply of powder, including Titegroup although I have yet to try it for any load. WSF works to well with the 147s for me to tinker any further.