It is frustrating though getting an entire series on one medium, then all of a sudden having a new medium with new featurettes and never before seen footage.
I had a lot on VHS ad have kept some of it, with the rest it was going to the dump until I found a friend who still wants VHS versions, which is a lot nicer to me than just throwing them away, even charity shops don't want them anymore!
I've got all the series on DVD, in some instances there are multiple versions of each series available on DVD, sadly my collection is a bit of a mixture.
I was tempted by the remastered series and I'm aware that it's all coming out on Bluray now. But at this stage I'm not budging. It's cost me a fortune to get all of the DVDs and I'll be damned if I'm going to fork out the better part of ?1,000 to do it all again.