[Titanic]

What is the difference between a Plossl and a Super Plossl eyepiece. Am I right in assuming anything called SP is better quality and hence the price difference. Also when sellers or manufacturers put their name on the eyepiece like Bintel Super Plossl are these eyepieces specially made for them to a set quality or could the same eyepiece be marketed under another other name like Skywatcher SP.
My second question is . The Orion Laser collimater and the Orion Collimating eyepiece both sold by Bintel are very similar in price. For a beginner which provides the easiest of use to collimate my new (when it arrives) 10" SW Dob.

Thanks for any advice

Steve