Hi, when creating new wallet under Choose Seed type
Default option is Segwit but text suggests to pick Legacy.
Which one to pick? and any complications with picking one over the other?
You should always pick Segwit unless you have to receive bitcoins from somebody whose using an exchange that does not support sending to Segwit addresses. Sewgit addresses are the newer address type which have lower transaction fees and by using them, you help push their adoption more.