I would love to see your product shots with the NEX 5n, not that I am saying it cannot take macro product shot photos. My friends used to do product shots as well, their main cameras are usually the 5Dmk2. The trouble for the NEX 5 is that, you do not have the PC lead for flashes, nor any attachments for macro ring flash. I just wonder what type of table top product shots you are taking?
I've used HMI lighting for many years, a lot of product work is done using HMIs. I was shooting some video with the 5n, on Sunday, using HMIs. So far everything is looking good.
I have two ideas for triggering Profoto generators. One is inexpensive, but quick and uses a PC cable. The other is much more expensive, but will allow the use of Pocket Wizards. I'm been custom building what I need for a long time.
I think mirror less cameras are mostly for rich boys who have money to burn. Practically speaking, if I want a compact camera, lots of people would just go for a simple P&S like the Canon S95 (or even a mobile or cell phone).
I've never owned a digital P&S, but I do have (and use) a Yashica T3 (Zeiss 35mm f2.8 lens) film P&S. I use a iPod Touch G4 as my walk around camera.
I'll be using my mirrorless cameras for business.