Compare forecasts

Hi every body,
a)
I?should compare the forecast of three model below. Could you help me?
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m1=garchFit(z1~garch(1,1),data=z1,trace=F)
f1=predict(m1,n.ahead=6)
m2=garchFit(z1~garch(1,1),data=z1,cond.dist='std',trace=F)
f2=predict(m2,n.ahead=6)
n=ugarchspec(variance.model = list(model = "eGARCH",garchOrder = c(1,1)),mean.model = list(armaOrder = c(0,0), include.mean = TRUE,arfima = F),distribution.model='std')? #same as arfima = F 
m3=ugarchfit(spec=n, data=z1)
f3=ugarchforecast(m3,n.ahead=6)

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b)
Also, I want calculateing forecasts for GARCH-M model and then compare to the other. What should I do? (I fitted this model with Tsay' function. I attached it)
Please help me.
?
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Thank you?so much,
Good luck
E. Daadmehr
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