I'm fine with 8 pt bots, just as I am with Netrods, but I don't take them every game either. I mentioned their downsides because it sounded like you weren't aware of the disadvantages to them. I see your point about buying 3, and getting one "good" one from the bunch. However, even just sitting in the DZ the Thorakite provides utility you're not going to get out of the Netrod. While most cases it's going to sit there looking pretty, it still has the potential the move down field, killing dudes, claiming objectives, etc. Just sitting in the DZ it provides DZ protection. So it's worth a bit more than the netrod, which does none of those things. Further you've also spent another resource, which is space in combat groups, which is also a limited resource, in a way that the Thorakite does not. Also I think you're glossing over the difference in killing the two models. Assuming you're correct, and everything goes right, and both the Netrod and Thorakite are deployed in full cover, and you get to shoot both with no action or cover for the Thorakite, the Thorakite is still ARM3. However, while the situation where the model is without cover, and takes no action is a guarantee for the Netrod, it's far more likely the Thorakite is in cover, and shooting back. The different between the Netrod sitting there and taking a hit (87% attack success), and the Thorakite being in cover shooting back (35% attack success) is ~50%. Further it means on average the netrod is going to die to one shot, the Thorakite to 3. Out of cover the odds drop to (50% attack success) which is 2 orders, and out of cover doing nothing still puts the Thorakite at 10% better odds of living.