Data is king these days. Any fitter that provides trackman or other data collection and analysis can tell you how your current setup is performing, and with some testing, identify what optimal shafts, weights, lofts, and clubhead type/size would work best. You can also test feel while there, regardless of fitter. So both are a big plus.

If you have been using 695s for a while, T100 will feel much closer to what you are used to, and you will likely pick up a little yardage with them due to CG and sweet spot improvements. The T100"S" is largely the same club, except 2 degree stronger lofts, which may or may not help your overall gaps and yardages.

I am getting fitted for a mixed set of 620MB/T100. the stronger lofts are interesting, but I do not want to upset my distance control by going too strong in loft.

Hope that helps.

There are 2 golf clubs listed as Titleist fitters for outdoor fittings. Even if they are private clubs, most will do fittings for non-members. With 5 sets of T irons, we can suggest to you but only a fitter, a range, and a monitor can nail the best fit for where you are today. Invariably, what I think will be the best club or shaft after reading through the descriptions and blogs - is not the best setup for me.