Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
They Eye One Display Pro, aka Eye One Display 3. Not the cheapest, but very fast, and reliable measurements. Cannot be beat at even twice its price point currently.
For non-professional use, I don't see much point in getting the i1 Display Pro. You can get the same quality from Colormunki Display, just at slower speed, but for people who only calibrate once a year, it's not an issue. The Colormunki is supposed to be artificially crippled by X-Rite's software to prevent it from clearly being a better value than the i1, but it's supported by Argyll CMS, so that's not really an issue any more.
The same is true for the Spyder 4 Express vs the Pro/Elite.
Colormunki produces somewhat better results than Spyder 4, but they are close enough for most people that the lower price of the Spyder 4 probably makes it a better value.