I will second the vote for Michael David. The prices they are offering right now are ridiculously low. I was in there a few weeks ago and had stop myself from buying up the whole store.
Interestingly, when I asked about the reason for the sale, I was told they were looking to clear out old inventory to go in a different direction: they are actually going to carry less sportswear and casual clothes in favor of more tailored clothing. I was surprised as suits and ties are becoming more rare in the business world, but they said there was a market.
Another place to think about is Jos. A. Bank. Their quality has gone down over the last few years, but if you can get one of their higher end suits (Signature Gold I think) on deep discount, it is a good deal. Just don't let their tailor do the alterations. Take it to someplace else like Kayvon.
One final piece of advice for anyone looking for one good suit that will be versatile: get a solid navy suit. Not a black one (you are not in Reservoir Dogs) and no pinstripes (save that for your third or fourth suit). Navy suits work for weddings, funerals, job interviews, bar mitzvahs, court appearances, anything.