If you can’t find linguine, spaghetti or similar will do. I will post a list of stockists as I find them.
Brown crab gives a way better flavour, it is taken from the body of the crab, is more expensive and can also be hard to find.
If buying crab meat from Lidl or Aldi chances are it will be white meat, which is taken from the legs and claws. This is great meat, I love it, though it’s not near as tasty as the lovely brown meat.
If you are making this as a midweek meal then go with white meat if you can’t find brown, if you can afford to and have access to a fishmonger then order some brown meat or better yet buy a whole crab and remove the brown and white meat yourself, this is the next best thing to cooking it yourself and will give the best results.
You can’t make a dish like this and use cheap pasta, so go for a good fresh egg pasta, De Cecco is by far my favourite brand and used by some of the best Italian restaurants around, it is also a little more pricey, though not so much. I have seen it in Dunnes, though think they stopped stocking it. Have a shop around or buy it online.