Thanks for all the suggestions I will be sure to check them all out !

I prefer a shoulder bag one that will slide over the pull out on my carry on bag. It should look somewhat professional but not over the top - I do installations/software configurations in Hospitals, County offices etc all over the country.

All my trips are 4-5 days so I use a carry on and do not need to stuff anything in the laptop bag except paperwork, a 15" laptop, the assorted cables - mouse - my tablet small one - a couple of chargers and my MP3 player for my beloved audiobooks. My budget is up to about 150 I don't see a need to spend anymore than that