We have a 2012 V-Light 30WFKSS and we like it very much. My wife loves the front kitchen, biggest reason for buying this trailer. She likes not having everyone in her way while she is cooking. Ours has the free standing table so getting to the refrigerator with the slide in is no problem. I like having the recliner/rockers and if necessary we just rearrange them for movie watching or TV, the recliner/rockers were my favorite. We like the space of the walk through bathroom, my wife refuses to have a trailer with the small bathroom. We also like how much room there is in the rear bedroom. We have one daughter and she sleeps on the sofa bed.
I made a battery tray on the tongue right behind the jack for two 6 volt batteries, have had no problems with clearance while turning and backing. There is a second grey tank for the kitchen, the dump valve is under the living room slide-out. We have never came close to filling that tank even on a week long trip, but you would have to crawl under the slide to get to it. Like paw-paw said outside storage is limited. We only have the one under the bed in the bedroom slide-out. I only put light stuff in there.
This trailer is much better build than our old trailer. It tows very well, although I have a 1-ton, dually, diesel, that is probably overkill, but its paid for. I do get a little better fuel mileage, but this trailer is lighter than our old trailer. I wouldn't expect too much difference in mileage between the V-light and a similar sized traditional trailer.