The one you want is the HB 201+ analyzer plus a supply of so-called cuvettes, which are thin plastic mini-containers filled with the chemical agent that reacts with your blood and delivers a measurement of your hemoglobin once you place it inside the analyzer.
If you are only going to measure your blood once in a while (say, on those occasions when you don't feel well), then I don't recommend buying the round canisters (vials) with 50 cuvettes each, because once you open the canister the cuvettes inside are good only for 3 months.
(I used to buy the canisters when I was having frequent episodes, and I was testing myself at least once daily and several times during each episode.)
Rather, you should get the individually packaged ones that come in a red paper box with 100 of them, because they're good for 2 years each.
That's why the better choice for occasional users is the $599 starter package.
You don't need to buy their Basic Connect software. (That's for blood banks and emergency rooms that use them all the time and want to store the information in a computer or other monitoring device.)
You'll also need to purchase alcohol pads, gauze pads, a lancing device, and the lancets, whether from your local pharmacy or online. However, look for the thickest lancets you can possibly find (gauge 21 or 23, at least here in the USA).
The most commonly found are very thin or fine-point lancets, but they are meant for diabetics to test their sugar. They don't yield enough blood to fill a cuvette.
On the company's website (www.hemocue.com), you can watch a video showing you how it all works.