I have it (and use it)...though I've yet to use it this season. I only add that caveat because I'm still not sure about the shelf life of these (pre-charged) products. I bought it last spring and liked it a lot, but if it no longer seems hold up this season as it did last...I'll be a little PO'd. As a hobbyist, there's just no way I can use that much product in one season. We'll see...
I was always a 303 fan for interiors...but didn't like how 303 seemed to wear off on areas I would touch frequently, like my door where I rest my elbow and such.
With respect to durability IMO it's def better than 303. It's "look" lasted longer and it didn't wear off on my door areas like 303.
Appearance and everything else seemed in line with 303, or any other interior protectant I've used. A nice rich dark color...not too shiny.
The only thing I really didn't like about it was its smell. It's kinda hard to explain, but I don't think anyone would call it a pleasant smell. The smell does dissipate after a couple hours. But for those first few hours your interior will smell a little funky.
Sorry, never used Ultima...so really can't compare.
