I've visited Sakonis in Wembley over 10 to 15 years.
Over that time little has changed except for the prices marginally increasing and the introduction of a buffet which initially was competitive but now seems dated and limited.
When sakonis first started it had little competition and was the best.
Today we compare it to others and their harrow branch.
The buffet menu: a range of items under a hot plate. Range is better than most restaurants but less than their harrow branch. Gives access to a range of dishes but price not competitive if there is a group of 5 and you share dishes.
items dry out a little under hot plate.
The set menu: much better than the buffet but to sample more of the menu recommend sharing amongst group of 4 or more. can specify level of heat.
service is sometimes very slow but when they can started everything can come at once.
Food can be oversalted, unfortunately you do not notice immediately but spend the night drinking water!
Cons: poor service/ good service luck, food can be salty, greasy