Heat Shrink Gun Kit

We need help in selecting which Heat Gun and accessories we need to heat shrink clear tubing for electronics, 3/16", temp rating 105C

At my home office I use this one:

On the assembly line at work I like this one (been using that model since 1980, only replaced every 10 to 20 years):

I’m sure there are more expensive units that can further reduce the number of seconds of labor required. Hopefully others will chime in with their favorites.