I like Trainwreck, it has a nice citrus/pine fresh scent, sativa-ish high, and is a medium producer. I have not grown Trainwreck in it's original glory from seed, I actually acquired what I have as a clone from a friend. I liked it enough to try and keep it, and Super Silver Haze seemed like a good one to pollinate it with.
Since this crop was the first cross, and is the furthest thing from stabilised, I have several different characteristics among the sisters. Some smell like SSH, some like TW, some are a combo of both, and some are all their own.
I've been having troubles with mold, mildew, and bugs, mostly due to an avocado tree that was in my yard (I cut it down). The avocado tree was diseased, and covered in powdery mildew, which in turn contaminated everything in my yard, so I am now in the process of having to phase out diseased plants and clones, while trying not to lose any of my preferred varieties.
I am actually harvesting the Silver Bullet right now, and will try and take photos to show the variances amongst the sisters, but no promises.