RE: Angled or straight?
I have grown accustom to the angled head, though it did take awhile from veiwing a straight eye piece for years. They just seem more verstile IMHO,but are at times harder to acquire targets. With the angled eye piece you can turn it to the left,right, up and down to suit your needs.
I have a pair of Swarovski ATS-80 HD's and love them