The I-Go-2 Plus is a model that I have been using for several years now- I own two of them actually. I purchased the second one after about 2 years of using the carrier. Unfortunately the strap broke on my first one. I am not sure if it was my dogs messing with the straps (Isabel's teething phase was ridiculous and she chewed EVERYTHING until we finally found the orange ball you see her with most of the time) or if it was normal wear and tear but the second one hasn't had any issues so far and we're coming up on the two year mark fairly soon for it.
For some reason the rest of my photos didn't come out well... weird fuzzy areas and speckles... not good. I will try and get some more photos on another day and update this entry. There are photos for almost every feature I discussed on the Amazon page in the meantime though (I believe it is the blue option that has the best stock photos of the various features but just toggle through the colors to view Pet Gear's photos).
You can view the I-Go-2 here if you would like to check it out. This one and the smaller version are the only ones that can fit under the seat in an airplane. This one is a tight fit but it does fit in Southwest, Delta and Spirit from my own experience. If they change to newer model planes the dimensions for under seat storage may change so I would check before you travel.