I was in the same delima......
about 4 months ago. I was lookng at the exact same list of bikes. I chose the Intense 5.5 mainly because on long climbs I like to stand from time to time and the 5.5 pedals better standing than all the other bikes, it also pedals better sitting. It loses in plushness while climbing rough stuff to the 5-spot and Titus Switchblade, but not very much. Going down it kills it, it rides down like it knows the fastest way. It handles hits as well if not better than anything else you are looking at, and big props go to the Swinger 4-way IMHO.
I rode all the bikes you mentioned before I bought the 5.5. I did not like the Blur, and really liked the 5-spot and Switchblade, so I was reluctant to try the 5.5, but once I did I was sold on it. Until I got the suspension dialed I had some pedal feedback and brake jack, but now I never notice it, if it is there it is really light and don't notice it.
You can't go wrong with this list of bikes (except the blur). I rode them all so I don't feel like I made a bad decision when I see one of the other bikes on the trail, I picked the one I liked based on seat of the pants on dirt feel. To each his own, try before you buy.
Good luck, it took me weeks to make my decision. But I am happy.
B