Hi There,
I've tried the loose version and like it a lot. My favorite mineral powder. It's not shiny like BE. It has a very natural and realistic finish, IMO. I am about NW20 (mac shade) and use Real Sand. It's not a perfect match, but it blends beautifully. Using the minerals has definitely helped normalize my skin. It looks much more healthy now. I think the downside is the lack of colors in the LM, but they all blend in really well so it's not the end of the world.
On a budget I like Everyday Minerals (an etailer), but choosing shades and finishes can get complicated. However they have a free sample kit you can order to get started.
If you want to try the LM, Sephora has a good intro kit that comes with the mineral powder, brush, primer, and a few other things. I wish that was around when I started out, but cest la vie.
I definitely think it's worth giving a try. Just order online from a place with easy returns in case you don't like it!