Depends on what you're looking for (for instance: work, traffic, taxes and so on
For instance, New Hampshire doesn't have any state income tax nor does it have any sales tax. (Of course they try to make up for this with property tax). Lot's of Mass. residents hop over the NH border to do their shopping and avoid the Mass. sales taxes
If you're looking at New Hampshire, most folks live pretty much directly north of Boston over the border in a large triangular area, roughly outlined by 3 towns: the town of Nashua forms the western corner, Salem (not to be confused with the Salem in Massachusetts) as the eastern corner, and Manchester as the norther corner. These places are about 1 hour or so north of Boston (though this can go up in rushhour traffic as many people make the exodus south to Boston for work and then back north in the afternoon.
Towns to consider in this general area, off the top of my head: Salem, Windham, Derry, Londonderry, Nashua, Pelham, Hudson, Litchfield, Manchester, Hollis, Amherst, Merrimack, Atkinson. I think Derry, Londonderry, and Windham are on average are more expensive than the other towns
Portsmouth, to the north east of Salem, NH, is another somewhat populous place
if you're looking for more rural area, then look to the west of this triangle or north to. it.
The above does have tech industries, if that what you're looking for, however there's more tech stuff the closer you get to Boston (putting aside that the tech industry is not the greatest at the moment)
Most of the tech stuff in the greater boston area, is (if not in Boston or Cambridge itself) along Highway 128 surrounds Boston (which really gets heavy during rush hour traffic. I'm only familar with the area north of Boston. Towns include: Woburn, Waltham, Burlington, Andover, North Andover, Lexington, Lowell, Tewksbury, Chelmsford, Methuen, Haverhill, Peabody, Danvers
So I recommand you pull out a map, look at Boston and southern New Hamphsire then look the above towns, and their relationship to the surrounding major highways (which will be Routes 93, 293, 3, 495, 128, and 95)
If you got any other questions, I'll give 'em a shot
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