I'll zoom forward with the assumption that my readers are waxing their own skis, and using at least a basic waxing iron.
From that starting point, I'm going to say that if you're not using a digital waxing iron, then it is time to step up and get one.
The Toko T14, in its newest version,
is really quite good for the price,
with a beefier base-plate.
The digital waxing irons have such good control of iron temperature that they really do provide an advantage to the user, and not just a digital techy bling factor.
For instance, with the tightly controlled digital thermostat you can wax the warm gliders (the yellows for warm temps, or base saturation, or hot-scrape cleaning) at 135 C (275F) with no smoke and very quick melt. If the temp was at 145C (293F), there would be smoke and burning wax. It's not a very big margin for error, and if you don't have accurate temp settings on your iron, you'd have to fuss and fiddle to get it right. And that's assuming that the thermostat is tight enough to keep the temperature from swinging over/under the desired operating point.
It's even more critical when dealing with the cold weather gliders and the fluoro powders. Getting the iron to the right temperature, with the very minimum of fluctuation, can really make a difference in the performance of the wax, and thus the skis.
With the proliferation of digital technology, the price on digital irons has dropped and now a good iron like the Toko T14 is around $140 which is about the price of a small package of the better quality fluoro powders. Toko, Swix, and Star all make good digital irons.
Accurate temperature control, tight thermostat control window for minimum temperature fluctuation, simpler to use, and at a reasonable price: it all adds up to a tool that is easy to justify. You should be using one.