The model you are looking at is a new line just out the past few months so, you probably won't get any specific responses. We have the first line of Sanibel's........and love it. Prime Time's customer service is second to none and they're a good solid unit.
The only difference I see between the Sanibel series and the Sanibel Traveler models is smaller grey and black tanks, no dresser in the front closet and lighter pin weights (possibly due to the lack of dresser?)
We will admit to a few minor problems, others have had some major issues but, overall, most here on this forum seem to be very happy with their choice & Prime Time.