First I have no affiliation to either of these places. I travel rt104 from 93 to Meredith about every other week. I have eaten at the TTS over the past few years probably 10 times and at the BBQS twice this year (it is new), links below. I think there is a little confusion to some other place in Tilton. Both places below are on rt104 after 93 and heading towards Meredith as previously mentioned.
So this is my personal opinion and preference. Both places are good but the difference is the dry rub at the TTS verses sauce at the BBQS. I prefer smoking with sauce over the dry method. The prices at the BBQS are also less if comparing. Both times I stopped at the BBQS while I was waiting the owner kept giving me samples…
When I compared a few weeks ago I ordered ribs and brisket at both places. My personal preference was the BBQS. I also found the ribs had more meat on them from the BBQS and more juicy than the TTS. In fact a number of times from the TTS I found the ribs to be quite dry. The owner at the BBQS was serving me sauce from a pot on the stove as he had just made it (was very excellent). He indicated it was some well know receipt and can be found online (I forget the name of it).
Both owners are very nice and I believe the guy at BBQS is from/lives in MA although has been in the area for some time.
https://www.facebook.com/TravelingTexasSmokeShop
http://www.bbqshak.com/