I used to swear by single pivot bikes like oranges – I had a y2k Marin attack trail and then a series of Sub5's and finally a patriot.
They were fine, and easy to maintain, however, IMO a decent linkage bike is a better ride.
Even now, orange rely on a huge dollop of compression damping to isolate pedal bob – Given this and the chain growth they exert, they're great bikes for feeling a bit 'hardtail-like', such a stiffening under power, and skipping, slipping in the same sorts of places as a hardtail, making them feel more 'pert' – I suspect this is one factor why hardtail riders making their first move to suspension can appreciate a similar feel of a hardtail under power, with extra cush and bump control too. Only two bearings to worry about too.
But, for optimal suspension performance, I reckon a decent linkage bike will beat em hands down. Just my opinion like and there are plenty that will disagree.
Fundamentally, it depends on what you prefer, like what tree magnet said. The 5 is certainly a 'Do-it-all bike', but I don't think its the 'ultimate Do-it-all bike', because I don't think there is one – there is only what you get on with best.
Oh, that and, like Pace, if you buy an Orange and something goes wrong, you're pretty much on your own.