Derek Underwood or Monty Panesar

[Rinky Dink]

is the better left arm spinner

[andnelgills]

Derek Underwood

[Duffer]

The best English left-arm spinner, in my view, was Phil Tufnell. He was a match winner but rarely picked because he was allegedly difficult to manage.

[KooKee :D]

The difference between the 2 is

Panesar can take wickets on a nice spin bowlers pitch, but he rarely gets a huge wicket-hall in tough spin bowling conditions

Whilst

Underwood on good pitches, against good players, would still take plentiful wickets through his unfailing accuracy.

Underwood is out of Panesar's league, he turned the ball more, he had more variations than Monty, and he won more matches than Panesar

[srikanth]

Monty is best because he is the oldest player playing cricket

[vsssarma]

Panesar is a slightly better bowler than Underwood.

Underwood is a slightly better batsman and fielder than Panesar.

Overall, Underwood is a better player than Panesar.

[octogen]

Monty is new to test cricket and still has a lot learn. Has not been around long enough to make a comparative judgement with the likes of DU. Apart from that the game is so different now with the expert coaches, heavier bats, but if i had to make a choice i think it would have to be Monty because of the tenacious attitude of the game today.