I am an expat board addict so I always read the posts LOL.
Lower Sackville and Fall River are totally different communities.
We looked at a few houses in Fall River and we totally fell in love with the area, it is very pretty and peaceful and the houses have quite alot of land.
The thing about it 'we' didn't like was that it felt 'further away' from the amenities we wanted and there is no bus route into Halifax where hubby works.
I know a few people that live there and are perfectly happy, but it just wasn't for us.
Lower Sackville is 30 minutes from both Dartmouth and Halifax and there is a direct bus route.
We live in the 'First Lake' area which is, I think, the prettiest area. We live close to all amenities for the kids - ice skating, sports stadium with pools, canoe club, gymmnasics, cinema, bowling, superstores, etc.
Our neighbours are fantasic and have been so welcoming and generous. They held a BBQ party for us when we arrived to welcome us.
I feel very safe here. My kids - age 13 and 5 years - play out with friends. My 13 year old is so much more active as she now walks everywhere and goes swimming 3 nights a weeks and gymmnastics 1 night. sports are much cheaper here!
My kids go to a great school on the next block, and they are definately alot happier here, as are we!
Speak to Annette Murphy from Remax. She is a Realtor based in Bedford. She was fantastic in finding us a great home in a great area. Also, Mike and Orla from UK2NovaScotia. Invaluble information from a family who did the move from the UK to here.
Good luck. The area you choose really comes down to personal opinion. Look at both and see how you feel.