I can vouch for boushie as a good seller. Go to
www.boushie.com to take alook at his stuff.
Also, if possible, your husband should try on a pair of Diesel's before buying, to get an idea of his size. Diesel jeans are very fitted, but there is a bit of 'vanity sizing'... For example, I wear a size 32 waist in ALL my dress and work pants, but size 32 Diesel jeans are way too big for me. Size 30 or 31 in Diesel is ideal for me, depending on the cut and wash.
So 33x34 (or maybe 32x34) may be your husband's ideal size in Diesel.