The Holiday Roast is a decent size, I'd say it could feed three or four very easily. The flavor of the "turkey" part of the roast was a bit bland, but some pepper livened it up. The inside of the roast was very flavorful, stuffing with cranberries tucked in the center. I enjoyed the gravy too, and it seems like they give you enough because I used a ton and still had some left over. Also to its credit, it was the cheapest of the three brands.
Without having the other two faux turkeys, it's hard for me to say how it compares. But I will say that if you like Gardein, you'll love this loaf. The blandness was kind of a bummer but is easily correctable with a little seasoning. The center is delicious, the gravy is plentiful and the price is right. Enjoy!