I believe that I have all of Linda's available works (except for Memory which is in the mail).
However, I found this book disturbing; _Tech_Heaven_ is my least favorite of hers (but still 4 stars). Mostly it was due to the story that results from when Kate puts Tom in cryonic suspension. The daughters are confused -- Daddy's not dead, but there was a funeral, Grandma is furious at Mommy for not letting Daddy die?
Because I found it disturbing, I think I was less forgiving of the imperfections in the plot & characters. And frankly, the "spiritual netherworld" didn't sit well with me either.
BUT - I would recommend the book, if only as serious food for thought or a precursor to LoV and her (excellent!) NanoTech books.
So the book is good, but it's not a a "feel good" read.