I need help deciding which book to buy~

So I'm quite new with this buying hentai thing and I pretty much have enough money to buy 2 books at the time; and I cant decide which one to buy between these 4, so please lend me a hand. (: Would help a lot if you could tell me why to buy which even if it might sound weird at some extent. XD

- My Bride is the Demon Lord!?
- S&M Ecstasy
- Peachy-Butt Girls
- Heat Alert

thanks~

Last two.

But I'm not you so

Metamorphosis
Curiosity XXXed the Cat
The Double Secret
Futabu! Mix
Witchcraft

Depends on what you're looking for I guess. You want a story or just some nice porn? I personally would go with Heat Alert and Peachy Butt Girls
-Heat Alert because it's about a virus that makes girls horny and just want to fuck right then and there and also by MEME50 who has amazing art.
-Peachy Butt Girls because it's by Bosshi who also has outstanding art.

My Bride is the Demon Lord isn't bad per se; it has a story (I guess lol), but the porn is good. S&M Ecstasy is also good and has a couple of stories with recurring characters. I would say choose S&M Ecstasy or Peachy Butt Girls depending on whose art you like more, but I stand definitively with my Heat Alert recommendation.

I would definitely get heat alert, but for the second one it would be between S&M ecstasy and demon lord IMO.