As an ex guard player I can tell you the army is really fun at first with all the different stuff going in the list that is drastically different than SM. However I got rather board of the static and cumbersome play style and really grew to dread the sheer number of models and tanks I would have to lug to the game store every week to play with. An 1850pt army can easily have 100+ infantry and 10 vehicles. Be prepared for one of the more expensive and time consuming army projects out there. Saying that, I still really love their tanks and do miss my Demolisher with triple heavy flamer sponsons! (Back in 4th edition tanks were hard to kill in combat so this thing was insane, especially the turn after an unsuccessful assault and the enemy was all bunched up on my front armor!)