I grew up in Ware, have lived in Stevenage, then Hitchin for 10 years, now Biggleswade. I work in all these area with my clients. It obviously boils down to personal taste!
I have never seen the appeal of Stotfold and Arlesey. We lived in Arlesey for a while too. People call it Arseley for a reason! Ha ha! Letchworth seems to me to have a bigger divide between posh and very rough. I have felt intimidated there when working in the area on a few occasions and haven't felt like that anywhere else. I have friends from there and know the area well. There are some nice places to eat and the cinema is great.
Hitchin is nice but has become very snooty. Some people like that though! I was worried about the traffic with the children growing up in Hitchin. I can relax in Biggleswade when they go out and about as there aren't such busy roads.
Biggleswade I think is great for kids and for getting on the A1 quickly. It used to take quite a while to access the A1 from Hitchin and from where I lived in Stevenage. I really appreciated this when moving to Biggleswade. It isn't the most beautiful town but it isn't the worst. It has lovely walks and countryside all around it. It also has everything we need and the train station so for the price, I think it is very good value. It reminds me of what Hitchin used to be like when we first lived there years ago, and it is improving.
I have always liked Baldock. It has some lovely tucked away streets. However there isn't enough there for me, but I can see why people like it a lot. Stotfold, including Fairfield, just seems like a massive housing estate and I don't think are worth the money (for me anyway).
I also spent a lot of time in Hertford when growing up and never liked it. Maybe we all feel like that though about where we grew up! I do have very nice clients all over though. My nightmare clients all seem to come from Cambridge area!