Similar too those 2,  without being those 2,  Bonty ACX 2.2 ??  light,  grip fine for me.

Maxxis Advantage 2.25 read 2.4+,  they make a great extreme tyre!!

Definate extreme ?? rocks ?? or forest track ??

Bit like extreme ironing then

Panaracers pants when wet due to synthetic rubber compound. people often think they're natural rubber 'cos of what panaracer say, but if you read up on the compounds carefully they're only foritfied with natural rubber within a synthetic polymer compound, hence the bad wet performance or sudden instant loss of traction.

The advantages worth a look, but I reccomend kenda nevegal 2.35 stick-e (55a slow rebound) which are totally progressive and extremely good on the wet rock/root stuff, better than the 60 compound of the maxxis, but quicker wearing, unless you can find a dtc for the rear. I totally swear by kenda's, and never at them, as they never let go no matter how wet, unless you do something silly. I ride rocks and roots most of the time btw, and being britain, mostly wet too.

The minion DHF 2.35 42a a great front tyre too that is quick rolling and very trustworthy, you could use an advantage 2.25 on the rear, the sizes would match up also as the minions are more like a 2.2 and the advantages are generous. The advantages do have a particularly soft 60a compound, which coupled with the tread flex grip quite well on such stuff.

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(before people have a rant at me for dissing panaracer, I'm talking from experience.  I used to commute everyday to work via the same route(s) (mix of on and off road), and have used (depending on bike and season) michelin, kenda, halo, maxxis, specialized, panaracer, tioga, wtb and out of all of them the panaracers were deathly, as soon as it got wet the steering was almost inneffective and braking was long and steady as the wheels insisted on locking with the slightest of pressure, the tioga was better and I binned that after it swat me into a phone box when wet! all the others were fine, some better than others, but none so absolutely downright scary as the fire xc's. In fairness, on the correct ground, this being soft earthey type stuff, they're a commendable tyre, I quite rate them, but not on rocks, roots, concrete or tarmac in the wet.)

Yeah, but there's Xc where you may encounter a small rock or root here and there.

All mountain where you live for rocks and roots especially the larger ones,

Dh where you die frequently because of the rocks and roots that are too big,

Dirt jump where people like to wrestle with a bike, in mid air,

and freeride where people think that they're lemmings, but on a bike!

Not to mention trials which is just superhuman

Then there are the sub catagories of XC riding

Moorland

Mountain

Fells

Downs 

Forest

Big mountain Small rock

small down large root

Mixed rock fells

rooty rocky forestry

Limestone moorland

Sandy gritty type moorland dry riding

You forgot peat based moorland riding!

What category do the 30+ year old chavs that ride to the shops/pub every day (and no further) on a Dh or Freeride bike that they bought from the carboot for £25 come under??

All mouthin?

If you wanted a tyre for, erm, 'extreme XC' why would you want one that was similar to either a Conto Vert or a Fire XC Pro. I'm thinking maybe what you want is a tyre for Extreme XC Lite?

Either that or Aggressive XC which is where you gurn when you're riding normal XC and shout at trees...