There are a lot of different types if games out there. Whether you would like Brave Soul or X-Change 2 better kind of depends on what you are looking for in a bishoujo game. Brave Soul (in my personal opinion, a better game… but that’s a personal opinion) is more of an RPG–you move through the story, explore a lot of places, ultimately (hopefully) win the love of one of the girls, and (hopefully) save the day. There is not a lot of sex or nudity, relatively speaking. X-Change 2 is more of a comedic sex story. This time, the objective is the girls, and there is a lot more sex and nudity. The story is not very deep by comparison. Both pretty much have good graphics, and I’ll admit that Brave Soul only has partial voice acting. Like I said, it pretty much depends on the type of game you want to get into. Some like the story, some like the girls, some like both.
There are several other sites that sell the games (Peach Princess just happens to be one of the producers). J-List and RightStuf are both distributors, and G-Collections is the other main producer of bishoujo games in the US at the moment. There may be other places to order them from, but those are the only ones I know of off hand.