The best thing to do here is get the basic equipment and then get other items you need as you need them. With online shopping and overnight delivery, it's easy to do.
The one other item you will likely need it test kits. I have posted this before but it's worth repeating -
DaveK's Standard Lecture #4 – Test Kits
There are a host of items that you may wish to test for in a reef system.
First before you worry about the other tests, make sure your SG is correct. I highly recommend using a refractometer for this measurement. Aquarium grade hydrometers tend to be very inaccurate, especially when used over time.
Once you have the SG correct you'll need the following test kits for the initial cycle -
pH (This can also be done via a pH meter, which is more accurate, and expensive)
Ammonia
Nitrite
Nitrate (low range)
To properly monitor the water, especially for corals, these these kits are often used -
KH or Alkalinity
Calcium
Magnesium
Phosphate
There are a host of other test kits you can get. I have some of them but do not typically use them.
Iodine - only needed if you are dousing iodine, which is not something I recommend.
Copper - only needed if you are treating a disease in a QT tank with copper.
Silicate - only needed if you suspect a problem with silicate in the water.
Strontium - only needed if dousing strontium
I think I've covered most of the major ones.
Each test kit works differently, so you need to consult the manufacturers instructions for each test.
As for brands, in aquarium grade test kits I like Elos, SeaChem and Salifret. Hach and LaMotte test kits are excellent, but extremely expensive. Most of the others are ok. Like anything else you get what you pay for.
If you do get a reading that seems way off, repeat the test, and if it still seems way off, use another brand test kit and repeat the test. In other words, consider that the test kit may be wrong.
You'll notice that you most likely will need to get a lot of test kits. It's often a lot less expensive to order them via the net, and you'll also know the test kit hasn't been sitting on the LFS shelf for years.