If Lahiru Kumara can get the swing of Lakmal he is the most threatening fast bowler SL has and on the other hand If Lakmal can up his pace a little bit he too can be a handful but both still have room for improvement specially in bowling the occasional slow delivery,delivering the perfect Yorker when needed..
With the number of years experience he got, performance of Suranga Lakmal is not up to the mark. Not challenging the batsman and Just bowling in good line and length.
Lahiru kumara has got the pace , but needs to learn how to swing
I think Vikum Sanjaya got the ability to swing the ball than any of the above. see his stats Vs England Lions...looks promising
I think eventually Vikum Sanjaya will be our next best bowler. Kumara is also good but struggles to swing the ball which is why he is sometimes not used with the new ball. Sanjaya has the same pace as Lakmal and also swings the ball well. Only problem for Lakmal is that he can take wickets consistently, and given the amount of experience he has, its quite dissapointing.