On paper the second one is better (for me). But I've warmed more to the first one (for me) somehow. Obviously I would go and walk around and consider both as the pictures don't tell the whole story, as I am sure you have done.
If you don't have a gut feeling which one is the right one for you and this is why you are asking, then consider things like, without having to make any major changes and spend major money, which kitchen feels better for you to cook and be in and put your own stuff into and will it fit, which flooring through the home you like better, whether you will really use the conservatory and what for, which window dressings you like best (if they are coming with the purchase), whether you like the bathrooms (there weren't many pictures of these especially in house 1), which type of garden fits your realistic lifestyle in the property, and whether there is anything that really annoys you about either of them that you are trying to think won't be a problem but actually will be.