Gold weight in a large eternity band

[NBSC]

In a larger round eternity band (0.45 ct per stone) is it better to use 14 or 18k gold for the setting? This will be an airline setting with shared prongs.
Do I need to worry about the prongs on 18k gold being too soft and losing stones?
Thanks!

 

[Garry H (Cut Nut)]

Assuming white gold? Platinum would be best and is at all time bargain price compared to gold right now.
A lot of 14K white alloys tend to be springy and not stay where the setter pushed them. Platinum is best and long wearing.

 

[Mlh]

Assuming white gold? Platinum would be best and is at all time bargain price compared to gold right now.
A lot of 14K white alloys tend to be springy and not stay where the setter pushed them. Platinum is best and long wearing.

@Garry H (Cut Nut) , any specific platinum mix you prefer. 950 vs 900 etc?

 

[Garry H (Cut Nut)]

We use an all purpose 950