Which are cheaper.... by cut i mean???

[jmona]

so my husband and i are upgrading my rings but on a budget, he found a jeweler online from penstate that is giving us full value for the rings i already have that have a 0.42ct SI2 H and its a channel setting, so were getting a simon g set rt128 that is very pretty but we are going on a budget and idk what stone cut would be cheaper to get if a 1ct cushion or a 1ct RB, i heard prices go by cut as well, so i need all the advice i can get, i was hoping it would end up looking like this link im even opting for just getting the engament ring if necessary to cut costs.

what do you all think????

Here are my other 2 links for you to see what i have been talking about link #2 has a picture of my current rings on the third post.

Advice, what cut to get, post as much as you liek and your own ring suggestions with pictures if you like Im new to the forums, so i can use all the help!!!