Yes, get a 2010 M8 and you'll be one happy guy! There are some around for well under $10,000. I personally know of three.
There a few things you can do to improve the sled but, they are pretty darn bullet proof. Buy the Cat goggle holder that mounts under the hood. It's wonderful.
The adjustable bars are great but, they can use a BDX bushing kit to tighten the play up a bit.
The stock skis work but aren't the best. Buy some Powder Pros and you'll be amazed.
Replace the single row bearing inside the diamond drive with a double row bearing.
If you get a sno pro. Send your shocks to Andy Youngstrom at Gasshockrepair.com for a revalve job and it will be the best $100-$150 you can spend on the sled.
Buy some side venting. These sleds really like to breath.
Buy a SLP single pipe kit for the 2010-2011 M8 and you lose 18.5 lbs and will be at very close to 170 very reliable hp.
Of course there are skid plates (I prefer the huge Cat one that covers the bottom of the clutches). It's cheap insurance.
There's the Geo mod for the skid, there are torsional spring setups for the secondary, there are AMP and other bar risers, there are lightweight A arms, etc.
Best of luck! You'll love the sled.