Are they any differences in effectiveness between lasers? Candela Gentlelase vs. Lumeins Lightsheer Duet

I had my first laser treatment with the Gentlease on my back, shoulders, and upper arms and had good results. However, it was very painful. 6 weeks later I chose to be treated in the same area with the Lightsheer Duet which was much more comfortable. I trusted forum of hair removal I visit seems to praise the Gentlease far better than the Lightsheer. Naturally, time and money are my biggest enemies and want to get results.