I am good with the 3x or 4x 7135’s in a tube light like the S2+. I did a build thread on 1.4A triples HERE if you want to look at some comparison beam shots. It is not direct, as these are triples, so there is a little more light, but not much. It may help you decide between the 1A and 3A driver.
In all practicality, if you want runtime and a good amount of light, the 3x 7135 at 1A output will do great, and your lower modes are proportional (i.e. 5% of 1A or 5% of 3A) so they are more usable as well.
If you can solder, or have someone that can, I would highly recommend a driver from Richard at Mtn Electronics ( 1A 3x 7135 ) flashed with guppydrv universal will give you all the modes you could want for a driver, and has some very nice low modes too.
Max amps are great when you need them, but for the most part, a 1A driver will get us along just fine and give out plenty of light while giving a cool, long run time on high.