We have several of these models in the Amazon sale. These are high quality, classic cut shirts. would recommend. If you want a more form-fitting midsection, their tailored fit is also a great option (but don't think you have a bit of a belly!)
H2H Mens Casual Slim Fit Short Sleeve T-Shirts Cotton Blended Soft Lightweight V-Neck/Crew-Neck
46 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review
Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 Review
Van Heusen Traveler Stretch Men's Shirt
47 Review