Big and tall mens dress pants often look good on larger people.
That extra touch of attention makes a big difference.
Are dress pants something for you?
First of all: Big and tall guys should take plain front pants. Pants with plaids accentuate the length of the legs and belly.
The best pants rest on the waist. Lycra is woven into the waistband for extra elasticity. For added comfort use a belt with some elasticity too.
The blue pants top right are pants without plaids, the grey pants below right are pants with plaids.
You choose what to wear, mens dress pants can make a man. These kinds of pants rarely look bad on you.
Try not to buy pants with back pockets or a lot of front pockets. Take the simple "waiters" model, black, two front pockets cotton elastic with maybe 10% polyester. These will stay good even over prolonged use.
A lot of big men like lightweight dress pants. These ventilate and keep the occupant cool. The biggest disadvantage of these pants is the wear between the legs. The pants become visible thinner after some time and rip or become see-true. Not to worry, this takes some time to happen.
Most of the big sizes pants have Lycra woven in to the fabric. This keeps the pants flexible.

When it comes to comfortable for big and tall, these type of non pleated mens dress pants really do well.
This one is good for people with office jobs. A darker color will do better for situations where you have to move in/out of a car, talk with customers, show items etc.
More physically active jobs require darker color dress pants.

Dark colored dress pants are more practical in everyday use where some physical activity needs to take place. Activity like driving, walking presentations etc.
You do not loose comfort over that though, these pants have great fit and with 4 inch additional stretch. A lot needs to happen before you grow out of these.
Big advantage of these pants is the fact that they stay good for a long time.

Pleated pants can make you look a bit bigger. There is no need to completely avoid them. If you choose darker pleated dress pants you will mostly reduce the effects.
These pants do feel quite roomy. The pleats give some extra width, always handy.
Besides that the extra stretch these pants usually have makes life easier for us big and tall gents.

Suit separates are an excellent way to get durable dress pants. These pants are a bit better tailored. You will find that a big belly is not really a problem. There made to give maximum leeway.
Be careful some pants come with unfinished inseam. you need to work that to make that fit perfectly.
The adjustable waistband in these models is extremely handy.