house edge for these two

[beyond14]

if one can allow double at all cards

the other one only allow double at 11

but give you some other favourite ,
if u get 7 7 7 give u 1:3
if u get the same flower 6 7 8 give u 1:3
if u get 5 cards but still not burst , u can win half immdiately

then which one is better , i think the first one is better , but how much house edge difference ?

[beyond14]

and i want to know

the five card not burst give u half win rule
is this a favourite for player?
since sometimes u may be win less than u should

if so , in what case should i take the money first ?
for example if i get 18 and dealer is a pic , should i take half first ?