Look what I found on AliExpress
http://s.aliexpress.com/uI3EZNby I
I use that one in my Silvertip. It's very tall at the peak and can take some pitching to prevent cloud cover (wife's term for when the sides cover her face and legs . We used it in Sweden and Norway and I recently used it for Wales.
sadly for my fly, it needs pitching 1st to reduce sag . It can be pitched 2nd but is quite a faff and I ended up on more times than not, having to pinch bits of the wall and add cordage to assist keeping it taut.
For one it's roomy and two quite snug but liveable.
I almost cut the bathtub out on the 1st night in Wales as I was that miserable with the pitch and weight.
By the 3rd night (especially when below -7 with snow) I was glad I wasn't so hasty.
Build wise it's pretty good.
Door fastening when open could be better but I've had no concerns with the bathtub or zips.
The weight when the bathtub underfloor is wet through and if the outer has got damp , is quite considerable.
When the fly has touched the sides, it's done quite well in not wetting through , considering the amount of humidity and condensation.
I still rate it as a good buy.