Texture-wise, 7-Select Onion Rings are almost identical to Funyuns; they both have that air-bubble, crunchy, fried feel. I think Funyun's are a bit thicker though.
The taste of the two rings are very different. On the initial bite, you start to get that onion, garlic flavor but then it all goes awry. There's a weird tomato-y after taste that I really did not like. It also a bit sweeter; they list brown sugar as one of the ingredients. There's a sourness that I particularly found distasteful (from tomato powder I think).
My advice? Stick with Funyuns. These are pretty awful.
Nutritional Info - 7-Select Onion Rings - 1.625 oz. (46g)
Calories - 220 (from Fat - 90)
Fat - 9g (Saturated Fat - 2.5g)
Sodium - 640mg
Carbs - 32g (Sugar - 3g)
Protein - 2g