Atlas Custom Line code 83 and code 100 turnouts do NOT have plastic frogs, they have isolated, blackened metal frogs with wiring taps that can be powered if desired. They where actually the first turnout on the market to be what is commonly called “DCC friendly”.
Only the train set type “snap switch” from Atlas has a plastic frog. Those things equal an 18" radius curves and should not be used for anything except maybe waterfront street trackage - they equal about a #3-1/2 turnout.
I find it interesting how people criticize products they know nothing about - or, make statements that are based on some version of a a product that has not been made in 4 decades.
As for the appearance of the Atlas frog, well it depends on what you are modeling. Real Class I railroads have been using big ugly cast frogs in some places for 40-50 years now - but many built up frogs still exist - which look more like your typical Wathers/Peco?hand layed frog - take your choice.
As Chuck commented, hand layed is no doubt the best if you have time and the skills.
Baring that choice, Atlas makes the most sense to me for the following reasons:
The newest versions, on the market for years now, have reversable throw bars.
They also now have points made from sold rail - NO MORE stamped metal points like days of old.
They mate up into crossovers and make yard ladders with 2" track centers with no trimming.
They are VERY afforable, especially if you shop around.
The “#4” is really a #4-1/2, always has been since its introduction decades ago.
Once painted and weathered, they look nearly as good any of that $25-$30 stuff.
They do work fine, they don’t have little springs built in that interfere with slow motion switch machines.
The switch machine choices are wide - a