If T.Bag had to be replaced, then I don't think we could have done a lot better than Georgina Hale for sheer all-out comedy and hilarious insanity - she has her moments; but, for me, Elizabeth Estensen was the original and the best. I think a lot of it depends on which one you saw first. A lot of the people I've come into contact with who never saw Estensen on its original run prefer Hale. I think they're both bloody marvellous!
It has to be Elizabeth Estensen as Tallulah Bag, even though I adored Georgina Hale as Tabatha Bag, many of my favourite moments in T-Bag are from the Tabatha Bag era.
Georgina did a fantastic job of taking over as T-Bag and although she wasn't (excuse the pun) everyone's cup of tea, I thoroughly enjoyed watching her more brashful, comedic and stark-raving bonkers T-Bag and after five series of Elizabeth as Tallulah Bag it made a drastic change for the series.
But, as Raggedbone says, I grew up watching Tallulah Bag first and so she has a special part in my childhood memories - and what memories they are.