I will tell you that their are few equals in wax. All of them cost quite a bit more to compete head to head with Souveran. Zymol Concours -- 169.00 , Zymol Ital (new) --364.00, Zymol Glasur 99.99, Swissol Smaragd-- 119.99.
For those that are looking for a good substitute that offer great looks and saving some $$ . Pinnacle Sig Series II, DP Max Wax, and Poorboys Nattys Blue.
The kits make great deals, and I know Max will likely have one or two annual Souveran sales. Thats why I stock up them.