Got a 50% off ChatGPT Business promo (2 seats for $20). Worth switching from Plus($20) for coding/codex app

Hey guys, Currently on ChatGPT Plus mostly for coding. I just got a ChatGPT Business that gives 50% off for 48 months, so I can get 2 seats for $20 total instead of the usual price. For anyone who has used both plans for heavy coding/codex stuff: Are the actual message limits on GPT-5.5 (Instant and Thinking) truly double or significantly higher on the Business plan compared to Plus? Does the coding performance or context usage run any differently on a Business workspace? I heard a rumor that background workspace indexing can sometimes eat up your token quota faster.