I limp with suited connectors any time I can. If the pot is raised much more than the minimum and I'm not in late position I will fold any suited connecors less than 9-T.
I used to not play them at all, but my post flop game has come along a bit...the only 1 gappers I will play are suited....and off suit connectors are J-T. I generally work on 1 aspect of my game at a time 'till I feel comfortable with it then add a new facet....low suited connectors are generally working out for me. Perhaps in a month or two I will add middle off-suit connectors and see how it goes.