The safest way to get to america is to get married with US citizen. That is less hastle and the spouses get their temporary green card within a month after they enter US. Talking about H-1, used to be good when the economy was healthy. Now people are doing everything to keep  themself in H1 as lot of people has lost their H-1 due to the jobless economy. In another words when a person does not know if he or she will be able to keep his H-1 successfully until he has his green card, than for sure you know you will be a pendulum as the future of yours lies on a big uncertainity. Marrying with green card used to be 3 to 4 years, but dont have the latest update on this. For sure there are cases in green card whose spouses came after 7-8 years but i am pretty sure they had some immigration problems.Lastly, even if you are in US and you marry a green card holder, you have to wait that 3 to 4 years for your papers.