[Jeebus]

In your opinion, is it better to take a few units, and spend some points on wargear, such as bonding knives and markerlights? Or is it better to use those points to either add models to the existing unit, or bring an extra squad?

[Vash113]

It depends on how you use them. I for one like to upgrade my Firewarriors with shas'ui and bonding to make the most of their limited numbers. But if you plan on packing a bunch of them then you wont need such things. The fewer you have the more you need to spend on protecting them but it also depends heavily on your tactics. If you want a strong firebase for a hybrid or static army more Firewarriors with less frills is better but if you want a few very fast units, smaller squads well upgraded with devilfish work well but those are just two examples from either extreme. The first thing you need to ask yourself is this:

How do I want to use them? and
What does my army lack?

Answering those questions will help you decide how to upgrade your various units be they tanks, crisis suits, or even just plain old Firewarriors or Kroot.

personally i just sort of look at which units i should upgrade and how many models i have. i figure that kroot are useless to upgrade (6+ save? no way) but then fire warriors may be a great option when coupled with photon grenades for an anti guard charge weapon (not much but if they charge with 20 guardsmen it helps a lot) all together i just look at who will benefit from some upgrading and who wont.

[MechTau]

I try to bring useful wargear... like that 6+ save is worth it if it works 3 times. Which happens!

Shaper is like 7 pts for Ld 8... useful too.

[march10k]

that is a good point...take the 6+ save if you're planning to get into assaults with the kroot. They have to take about a dozen armor saves to pay for the upgrade....which should happen every game in assault, and virtually never in shooting.