I've got the first four of those, although I haven't watched them for some time. I rate them very highly, and love the relationship between Tom/Lis/Ian.
I think 'Genesis' in particular is one of the all-time classics of television sci-fi from any era. For a family tea time show, it had depth and touched on some interesting ethical questions.
"A man's work is nothing but this slow trek to rediscover, through the detours of art, those two or three great and simple images in whose presence his heart first opened."