I have typically purchased the lighter-weight basic coverall and this Deluxe is so much better. It's totally worth the price difference if you're looking for a nice work coverall at a good price. (For the record, I still use the basic coveralls for keeping my clothes from getting dirty if I have to do a quick fix on something, but I much prefer this heavier-duty coverall for actually doing work.)
As far as sizing, I'm 6'2", 175lbs and both a Large and Medium Tall. The Medium Tall fits perfectly, as it's the same length as the large, just a little slimmer. (My pant size is 33/33 if that helps).