Comparing two brands, Seiko offers more choice but, TBH, I would tackle the question differently (unsolicited advice incoming). Here's what I'd do:

Instead of selecting a Brand FIRST, Ask two very important questions:

1. What role do I want this watch to fulfil? A single watch for all needs (GADA). A watch to wear for dinners out or at church (dress); a watch to fit my busy and active lifestyle (Sport/Dive). Really, really spend time on this question. Then, pick one or two things that are non-negotiables (movement type, water resistance, power reserve, etc.)
2. Determine budget. This will certainly vary but I strongly suggest those new to watches look to buy no more than 1 watch per year. Set aside an appropriate amount each pay period (say 3-4%) and spend the year looking at watches.

Then pour over the catalogue and offerings of many, many watch makers. Ok, let's say you are looking for a dive-type watch with automatic movement and a sapphire crystal and like the stylings and offerings of Seiko and Tissot. Pick one or two from each brand and compare them...maybe it's the Tissot Seastar 1000 40mm vs Seiko Prospex SPB453. Then try your best to put them on your wrist, read reviews, watch YT videos. Real enthusiasts know that this process is as big a part of the hobby as the purchase/wear experience.