Omega Speedmaster Calibre 321 Chronograph 39 7mmvsTissot PR516

Owners and reviewers widely praise the Omega Speedmaster Calibre 321 Chronograph 39.7mm for its historical fidelity to the 105.003, its superior finishing, and the tactile feel of its pushers and bracelet, with some considering it the ultimate Speedmaster. The movement's copper-plated finish and column-wheel chronograph mechanism are highlighted as distinguishing features. However, its high price, limited availability, and lack of hacking, anti-magnetism, and crown guards are noted drawbacks. Accuracy varies, with one owner reporting +20 seconds per day out of the box, while others cite better performance. On balance, owners and reviewers rate the Omega Speedmaster Calibre 321 Chronograph 39.7mm highly for its blend of vintage aesthetic, superb movement finishing, and comfortable wearability, justifying its premium price for enthusiasts.

Owners widely praise the Tissot PR516 for its retro styling, good finishing, and accessible price point, with many appreciating its historical inspiration and dial execution. Some reviewers note a thickness of 14mm, and one owner finds the dial bland. The folded steel clasp is a minor detraction for one reviewer, while another criticizes the mineral glass bezel insert. On balance, owners and reviewers rate the Tissot PR516 highly for its vintage charm and value.