For me, it's a tough choice between Magic and Mr Clutch. As great as player as he is and should be for years to come, Kobe isn't quite up to their level yet.
Jerry West remains very underrated while Magic played with one of the greatest centres in the history of the game for the first ten years of his career. Not enough is said about West's heroics in the fourth quarter or indeed his game in general.
Having said that, his career as a player yielded only one title in nine trips to the NBA Finals. The Lakers have won more titles with the Logo in the front office. In all fairness, the powerful Celtics dominated the 60s, the era in which West's Lakers made most of their appearances in the Finals. But they certainly had opportunities to dethrone the Celtics in closely fought six and seven game series.
For all West's heroics, they seemed to come at the wrong time, or just weren't enough. His incredible shot from more than 60 feet from the basket sent the game into overtime, where the Celtics prevailed. It isn't fair to lay all the blame upon West, but his reputation and the nickname it gave him would seem to suggest that his Laker teams should have been able to topple the Celtics with West delivering the final blow.
The Lakers won five titles during Magic Johnson's career, though he had plenty of help in the form of the league's all-time leading scorer and one of the best centres of all-time in Kareem Abdul-Jabbar, as well as recent Hall of Fame inductee James Worthy, as well as other players such as Byron Scott, A.C. Green and Michael Cooper that made the Lakers one of the best teams in the league throughout the 80s.
Bird's Celtics now replaced Russell's Celtics as the Lakers' main foe in their quest for NBA gold, but the playing field seemed to be more even in the 80s. The Celtics of the 60s prevailed over the Lakers every time the teams met in the Finals. The Lakers and Celtics of the 80s met three times in the 80s with the Lakers winning twice. In that regard, Magic's Lakers probably had the advantage as far as the competition was concerned.
Mind you, the Lakers and Celtics of the 80s didn't dispense one another too easily. The championships won in the three years they faced each other in the Finals were decided in a total of 19 out of a possible 21 games. There were games when one team would be completely in control, but they still made each other earn the Larry O'Brien trophy.
I'm inclined to give Magic the nod as far as team success is concerned, though his five championships to West's one is a little misleading. In terms of the players as individuals, Magic's versatility must prevail over West's clutch ability. Magic wasn't too shabby in the fourth quarter himself. His mini-skyhook saved the day for Los Angeles in the 1987 Finals and he was adept at performing under pressure.
Long story short (and everyone who can't be bothered reading my whole post

), I choose Magic.