I run into similar issues with size, although my work wear is more casual so I have a bit more flexibility. I second the Lafayette 148 has lovely fabric and nice cuts, ebay can be a good source for sales. Anna Sholz has sizes starting at 14 and the quality is very good.

I have a dress from Dobbin, which Angie featured a while back. The fabric is amazing, nice smooth jersey that doesn't cling and the quality made in USA I appreciate. http://www.dobbinclothing.com/
They do have sales and I received a first time customer discount

I also find the Michael/Michael Kors line and DKNY to have larger sizes in contemporary styles. And it might be worth a check to Lands end, they have some more dressy work items that can stand up to some wear

Uniglo for 5'0 me is just too long. I do agree that the workmanship is nice. The jeans and puffers -- so wanted them to work! But vertical proportions even in the smallest size are still way off for my height. Gained weight --- vertical proportions still are off.

This is a tall person store.

Limited now has petites and I ordered some last year... I did like but quality was iffy. Also some of the workmanship was totally off, as in, tabbed sleeve strap thingie being sewn on at a point well below my elbow?? Rather than on upper arm. Bizarre.

I'll second the suggestion for Ralph Lauren. I've always loved this brand. It is like Talbots in that you have to be picky. But quality tends to be consistent. As well as sizing: I can safely order online and know that they haven't futzed with their fit model. (Cross fingers, hope I didn't just jinx!)

I'm 5'9" -- just barely borderline "Tall" -- Unilquo is usually too short.

I have just realised I have a lot of work clothes from Macy's - suits, trousers...

I work in a business casual environment, with some conferences & client meetings. I just went through a complete closet edit this weekend and was surprised how many of the things that are still in good condition, still flattering, and still current / modern classic enough to keep were from BR or The Limited from years back. I have learned to stay away from BR Outlet - quality and cut is substandard to regular BR, and the Limited is getting more hit or miss in terms of cut & quality. Several pair of pants from the Limited are in great shape at least 8 years in. Classic blazers are all from J Crew or BR or Talbots. Some BR dresses. My trendier stuff tends to be blouses from Nordstrom - Pleoine, Theory, Trouve, etc. I've parted with most all of the Eddie Bauer I've bought - the fit and length of blazers just doesn't seem to work for me. Same with stuff from Boden.