I've had my slx v2 1 man for about a year now and can't fault it at all. It's solid as a rock in the wind and bone dry in the rain, the peak is a great feature in the rain. While all my friends are all zipped up trying to stay dry when its raining I'm able to keep the door open and look out to the lake as the peak keeps the rain out the doorway. Its plenty warm enough when its cold with the winter skin on and i can even manage to get 2 bed chairs in with room to spare when the better half wants to come along.
Overall, for its price its a great bivvy well put together and does everything you ask of it