I have the Janome 6600 and agree there is not enough light-especially if sewing in the evening.
I bought the Bendable Bright Light which attaches to a bracket that sticks on my machine. You can purchase additional brackets for around $6 to put on other machines if you have a different machine you take to workshops, etc.
www.sewforless.com has the Bendable Bright Light for around $27. I have no affiliation with them other than looking for good prices.
I love this particular one because it has a flexible neck which allows me to swivel it out to focus on my fabric when I'm seam ripping, etc. I can also focus it on my presser foot while sewing, but also use it for other close up tasks. I also like that it plugs in and is not reliant on batteries.
I'm interested in the light above that apparently came from Ikea. I believe that's the one I've seen Bonnie Hunter using! I wondered where it came from.