Towards the end of November 2013 I finished my first ~260 Points of Mentors Legion Space Marines. I just like the background / fluff behind this Space Marine chapter. And the colours. 
The short army list is as follows:
*************** 1 Troops ***************
Tactical Squad
10 Space Marines, Plasma gun, Plasma cannon
+ Upgrade to Sergeant, bolt pistol, chainsword, Melta bombs -> 5 Points
– – – > 175 Points
*************** 1 Fast Attack ***************
1 Landspeeder, 1 x Multi-melta, 1 x Typhoon missle launcher
– – – > 85 Points
Total Space Marines : 260 Points