Initially i do calculate iv etc based on what i read online..
Come to realise doesnt make much difference... no matter how high cp pokemon is.. a team effort can take it out easily... best c hp and moveset dps n c which one is effective against the pokemon placed inside the gym... team effort is more important.. as for catching above 2k... its really random... i power up my pokemon for that... places like setiawalk n taman jaya with non stop spawning is good for stardust... for me i catch everything n dont choose... i leave when my pokeballs run out... on the way back i pusing ss15 slowly to hatch and reload the balls ... generally hot area like bangsar etc will spawn rare stuff past 1am...

Agree.. read up on that b4 also... i havent come to that level yet and most probably wont as this is a platform for me, my wife and my two kids to play.. father and mother take gym out.. put something easy for them like magikarp and let them battle.. let them collect 10 coin per day they very happy already.. lol.. its d process of fun goin round finding unexpected stuff which is priceless... especially when four person inside car catch.. d cp pokemon that my sons got is higher than their parents.. they super happy and say d darndest things like.. " daddy daddy look.. my pokemon more powerful than yours one leh.." and we all laugh over it.. my youngest son age 4 havent fully memorized a to z.. but he can named all pokemon name out.. haha.. today while goin round taipan collecting balls chance upon charmeleon... my son's cp 700+ and mine 400+ ... he super happy already..