Posted on 26 Aug 2013
Hi Mike,
I don't know anything about the Isabella but I can comment on the Kampa 390.
I bought this to replace a full awning. It has better all round headroom than other awnings of this type, due to its pole arrangement. It (so far!) seems watertight and has plenty of flexibility with regards door opening etc. Most importantly to me, I can easily erect it on my own. Takes roughly 20 mins to put up and peg down, and probably 30 mins to take down, fold up and stow.
For me it fits the bill perfectly and at a price that suits.
Hope this helps!