Definitely worth it, IMO.
I bought myself a Tungsten5 as a graduation present in May and I love it!
I started work in June and most of the nurses think it's great too.
I find it much quicker when I need to know what a particular med is.
I have two drug guides, a skills program, typical labs, med math, eponyms and Taber's Dictionary on mine.
Don't leave home without it