I think it would depend on how aggressive you plan on overclocking.
For most purposes, a Coolermaster Hyper 212 is sufficient. Don't underestimate its performance because of its low price, because it's quite capable.
The Noctua NH-D14 should be able to let you run your 1100T at 4.0GHz daily at 65C idle, as stated by a poster at Overclockers.com forum. If your OC plans are to go above 4.0GHz, then I'd suggest you spare no dime and get the Noctua.
4GHz was the max I was ever planning on OCing it, the Noctua is my preferred choice out of all of them, and I can get it at a good price, however I need some confermation it isnt going to clash with the RAM, it would be a shame to buy it and have that happen.
I dont really want to try liquid cooling for my first build as I am a bit paranoid something will go wrong, build is on hold anyway, car's clutch / pressure plate have failed so I am expecting a bad repair bill
it isnt as daunting as you may think the all in 1 systems are no harder to fit than a normal hsf. and there are no user serviceable parts. it really is worth a look if your gonna be spending 50-100 on a cooler.