I thought you already had a 228 Seafarer? It really just depends on your location, the area you're going to boat/fish in the most, if you plan on trailering it on your own or have it in a slip, etc. I prefer the 228 Seafarer and have a 2004, though I've admittedly never owned a 232 Gulfstream before, I did step on one at the local dealership here in Edmonds and it's a much bigger boat than what I need for fishing in the Puget Sound. I've briefly considered buying one as it would be a slightly bigger boat with the option for twins, but I can't see how it would be better than what I've got as I rarely ever need a bigger boat than what I currently have. The below mentioned items are just my opinions...
228 Seafarer pros - Feels like a big boat for only being 22' long, comfortable in size, decent cabin and nice size of fishing space, will allow you to fish in the ocean on certain days weather permitting, extremely versatile boat in that you can troll for salmon or pull the kids on an inner tube, take the family out for a sunset cruise, etc. You can fish on it, trailer it and launch/retrieve it on your own quite easily if you know what you're doing. As mentioned, it's easier to trailer and store as it's a smaller/narrower boat that takes up less space. One outboard as opposed to two, so you've got less maintenance costs. It's a lighter boat as well, so you might get better fuel economy as opposed to one with twins or even a bigger, heavier single outboard. Still a decent market for them even though they stopped producing them in I believe it was 2021. All level flooring with no steps or stairs to slip on.
232 Gulfstream pros - 9'3" beam vs the 8' beam of the former boat. Option for twin outboards, if you want them. Bigger cabin but it does have the bunkbed style of bed, if that makes any difference to you. You're less weather dependent than the former boat as you have a considerably bigger boat. It'll likely be more comfortable riding as opposed to the former, as well as likely have a longer range if you need it. They still produce the 232 Gulfstream to this day and there's still a good market for them as they're a pretty popular model of Grady White walkaround. The 2006 and newer models have the fold down rear seat with a much larger built in cooler/fish box area, which I prefer over the 2005 and earlier models. Makes the fishing room seem a bit better than the former with having a molded in live well in the center of the transom and then a seat on each side of it, which I rarely ever use.