[Albtraum]

Own a Marlin 60, but my brother's have 10/22's. Both are great .22s, and are both very reliable, do not cost as much as other manufacturer's (Browning's and Remington's are closer to $500, while these are sub-$250) they are popular for a reason. Some features I'd like to point out between the two:

Marlin 60 +'s:
Tubefed magazine makes the gun thin and sleek in your hands. Not sure of the weight compared to the two, but the Marlin 60's stock, fit and finish is great.
Tubefed Magazine holds 14 rounds, which is great if you live in California like me.
Has Bolt-Hold-Open feature, after the last round is fired, the bolt stays open, letting you know you're out, and prevents a dry-fire, which is really bad for rimfires.

Marlin 60 -'s
Tubefed magazine - Unusual to load, you point the gun in the air, remove the brass tube, put in the rounds and put the tube back in.
Not a big market for upgrading the gun, just the stocks and triggers.
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Ruger 10/22 +'s
Upgradable. There is a huge market out there for every component of the gun, although it is pricey. Some people aren't satisfied with the stock 10/22 barrel, so that's usually the first to go. Lots of new stocks in a variety of shapes and colors, at a gun show, I tried out some nice ones and they fit really well.
Rotary magazines don't protrude from the stock.

Ruger 10/22 -'s
Rotary magazine is unusual to remove, you pull a lever and press a button and wiggle the magazine out, rather than pressing a button which drops the mag out.
Loading the magazines hurts my finger tips after pushing them in, the spring is pretty powerful.
The stock is pretty wide due to the rotary magazine, then tapers down towards the front of the foregrip. I personally do not like the wideness.