Here is the short version:
If heavy trooping is your primary concern, get a hyperfirm. It's made of hard rubber and will not break. Also has good details, but you will not be able to paint as nicely and the ones below. It's base is black, so that may not matter to you. You can still do some weathering, but heavy effects may not hold up over time due to the flex factor. $450-$550
If you are into light trooping, consider Sidewinder. His blasters are very light and have amazing detail. They are resin so can be painted. This is what I have, but I do very light trooping. This is probably the most fragile of the three. As long as you don't drop it on a hard surface, you'll be okay. $300 which includes painting
If purely for display or modeling or if you are a superhero the Master Replicas has great detail and feels like a real weapon, but it is 10-12 lbs heavier than the two above, so it will wear you arms out in a matter of minutes. Also, the MR paint is only so-so, you may want to repaint. $450 for the MR + $100 to have somebody professional repaint