Hello Beri,
If i were you i'd go for your first choice, or build a better one yourself.
I had alienware before and to be honoust if you dont spend a lot more money (so not the standard version) your just buying the case and the brand not the inside. There are so many better alternatives to make / buy for that amount

Also they look very nice on the pictures but those alienware cases are HUGE and heavy. Compared to your normal pc Case