Atlas switches: problems with availability and limited selection if and when in stock. IMO, nothing beats Ross. Made in America. Ross has great selection. Made in THIS America. Great service. Made in the USA.
Atlas flex is a pain. Curving MTH Scale Trax or GG makes the job much easier. GG track 1/3 the price of Atlas.
Soldered wire to rail is fail safe. Rail joiners can build up resistance over time down the road.
I do not like time bombs.