We went last night and despite having to wait outside for about 20 minutes, it was well worth the wait.
I ordered the spicy tantan, my companion the shoyu ramen and we split an order of gyoza. Both were delicious in their own way. My broth was so rich tasting with spices and pork it felt almost thick. The shoyu was much lighter but also very good. Neither were overly salty and the flavour came from the ingredients, not salt. My favourite part of ramen, the eggs, were cooked perfectly.
My friend, an aficionado of gyoza, declared them the best he had eaten.
If it wasn't for the wait in the cold, Sansotei Ramen would get five stars. I'm already planning my next visit, but at a slightly off time to avoid the wait.