On the long-haul segment, Los Angeles to Pula business class travelers have a strong lineup of carriers to choose from, and the differences between them are real, not marketing fluff. American's Flagship Suite and United Polaris both offer solid 1-2-1 lie-flat pods with good bedding (Casper for American, Saks Fifth Avenue for United), but British Airways' Club Suite and Delta One Suite go a step further with an actual closing door for privacy — worth the upgrade if you're trying to sleep through an eastbound overnight flight. Lufthansa's newer Allegris suites on the A350 are getting strong reviews for space and quiet, and if you're routing through Istanbul, Turkish Airlines pairs a genuinely good lie-flat product with DO&CO catering that outperforms most US carriers on food. Air France, Finnair, and SAS round out the European options, each routing through their respective hubs (Paris, Helsinki, Copenhagen) with reliable lie-flat seats and distinct regional service styles — Finnair in particular is worth considering if you want a shorter overall connection time via Helsinki.