Options for Mounting iMac 27"

Hi everyone. I have a few options in mind to (WALL) mount my iMac 27" 3.06. I was wondering if I could get your expert opinions on the most useful and compatible option. I already purchased the VESA Mount Adapter (MC772ZM/A) for 27". Articulating arm, tilt, swivel a must. Mounting into dry wall and stud.

I would prefer to not have to adjust/tighten every time I tilt. $40 tops!

With that said, here are a few options: Feel free to recommend.

1. 3 Way Adjustable Tilting Wall Mount Bracket for LCD (Max 66Lbs, 17~37inch) | LCD Wall Mount Brackets

2. VideoSecu Articulating TV Wall Mount for most 22" to 42" VESA 200x200 Display LCD LED TV Wall Mount Bracket Free 6" 3-Axis Magnetic Bubble Level B93: Electronics

3. Adjustable Tilting/Swiveling Wall Mount Bracket for LCD LED Plasma Corner Friendly (Max 80Lbs, 24~37inch) | LCD Plasma Brackets - Tilting/Swiveling Type


This is my first post, please let me know if I need to change anything.

Thanks, and I look forward to your replies.
Nik