I don't drink V8 or tomato/veg. juice in general, but have heard others comments on the low sodium version. Some really like it though, so it seems to be an individualized response. Rather than sweetening it with sucralose, I'd think about spicing it up with other spices. Maybe some hot sauce or ground black pepper for instance? Onion or garlic powder? Don't really know. Some people who don't like V8 find heating it and making it more like a tomato soup more enjoyable. (I don't like tomato soup though either!) I'd say just keep experimenting!
I'm just not a fan of sweetening things that aren't sweet to begin with or contain natural sugars like tomatoes. I think there is a value in a lifestyle change to start to learn to like foods in their more natural formats and flavors. Sometimes we just have to be willing to put up with a "different" flavor profile than we are used to until it becomes the norm. My experience is that our taste buds change around pretty quickly if we let them.