IF you want less expensive, look into Manchester. Manchester, Nashua, Portsmouth make up, what is called the Golden Triangle of southern NH. Homes inside this zone you pay a premium for.
I just got your request. If you still need help, I have been a broker for 25 years and I specialize in investment property. I also have been an investor for 30 years. If you don't have an agent, contact me and I would be glad to help.
Jeff Hendrick Broker/Owner
New Hampshire Real Estate Exchange