Battle Report: Ultramarines vs. Tau, 2000 points

This battle was about 2 weeks ago, I didn't document it at all until now. I will try to recall the events to the best of my questionable ability. This was a smash and grab mission, take and hold objectives.
I always run with the same army:

HQ: Crisis Commander with 2 bodyguards, all have plasma rifles and gun drones
Elite: Crisis suit with fusion blasters and gun drones
Troops: 10 firewarriors in pimped out devilfish X4
Troops: 20 Kroot
Heavy: Hammerhead gunship with rail gun and burst cannon X3

I usually use the same tactic: Keep everything in reserve except for the hammerheads. Concentrate fire on the greatest threat, eliminate, rinse and repeat. 
Scott said that he had some surprises for me. I was hoping for cake. The surprises came in the form of deep striking terminators and assault marines armed with melta bombs. I have been encouraging Scott to play aggressively. Our first couple of games, he had all his troops hiding behind terrain and let me come to him. My Tau army is very tank heavy, I run with 4 Devilfish transports for my troops and 3 Hammerhead gunships. Scott was able to destroy a couple of my tanks with the melta bombs and power fists.
Some other highlights of the game: My Crisis HQ took out an entire squad of terminators. Took a couple turns. Scott's marine commander was taken out in hand to hand with firewarriors. (???) He'll never live that down.
It looked like I had the game pretty well locked up by turn 4. I had 2 units of Firewarriors near objectives and more on the way. Scott was able to destroy all but 1 unit and the game ended up in a tie by turn 5. We decided to go another turn and it still ended up in a tie.
The Tau really don't have anything that can hold objectives all that well. But I had fun. I like to be challenged, I don't like an easy victory.