You know...after thinking about it, I'd have to agree with Sumi. I mean, I started with Necrons, and was perfectly happy with them...but that was because I didn't know what it was like to collect any other army, and had nothing to compare them with. I enjoyed them a lot for their tactics, afterall, when every unit is the same, tactics are a lot more clear cut. However, for a new player who might be looking to have some fun with wargear and what not, Necrons can be surprisingly shallow. I figure that the Space Marines really are the easiest, most forgiving race to play. Each unit is very well rounded, and will perform well in most environments. Necrons aren't out of the question, but unlike the Space Marines, your run of the mill Necron warrior will perform poorly when a more experienced Tyranid player forces them into close combat, or when deepstriking Terminators pop up on their flanks. With the Necrons, you really have to integrate your effort, and make sure that your forces support eachother and remain coherent. Being hard to kill isn't everything.