I'm blurting from memory, so take the stuffs below with a pinch of salt.
Best V1 : calls 36sen/min / after HitRM1 then calls become 12sen/min and FnF is 12sen/min flat rate
Best V2+V3 are minor variations of V1 but call rates the same, for example:
a) V1+V2 = 90 days grace period, PAYU max at RM5
b) V3 = 75 days grace period, PAYU max at RM8
Best V4 : calls 6sen for 1st 10secs, 20sen next 2 minutes, 20 sen/min subsequently
Best V4 : FnF 6sen for 1st 10secs, 12sen next 2 minutes, 12sen/min subsequently (11 digi + 4 non-digi numbers)
New Best V1 + V2 : calls originally at 10sen/30secs and later changed to 12sen. FnF : 10 kawan originally at 5sen/30secs and later changed to 6sen.
New Best 2016 : calls 12sen/30secs and 6sen/30secs to 20 kawan.
Free calls are originally for 3 Buddyz on easy, smart and live prepaids. Easy prepaids v1> v2> v3 also have minor variations that I have forgotten. For example: Easy v1 have 3 Buddyz + 3 FnF / PAYU max RM3 ..... Sooo many versions to keep track !
Digi have changed the rates so many times so must ask actual users to ascertain what is the current rates for subs still on older versions. For example: my best v4 + iddic is being charged 30sen/minute flat rate .... why? I have no idea and not bothered to find out.
Hope that helps.
Actually why do people want to know the various version ? The older version is no longer offered and discussion is purely intellectual right ?