I have the 100g ruggles rug. It does come up slightly short (about an inch) compared to what i'm used to in length but there is plenty of adjustment. the neck rug fixes well and is spacious so doesn't restrict movement. I haven't tried the rain sheets as currently have enough rugs but just wanted to say the price of ruggles rug and quality is very good.
on the website it says something about the tail flap being big - its not but is adequate!
I have a Ruggles neck rug which I'm very happy with. It is quite lightweight and is nicely waterproof.
I was going to buy a Ruggles rug on the basis of that. I emailed Ruggles to inquire whether their rugs were generously cut as I have a large horse. They replied that they might look short.
Having said that my Ruggles neck rug is huge and would probably cover a mini shetland! It would be interesting to hear from others.
the neck rug on mine is generous in the sense that its quite wide - so horse can graze etc without it pulling back on the neck. length wise its "normal" length