Posted: Apr 12, 2022 - 09:00 PM
So I'm a bit biased as I also work with RS Sailing. But I would encourage you to do some research on hull shapes. The RS Cats have way more volume and are a much more modern like design, compare the AC45 hulls to the RS Cat, very similar. The Topper cats were designed by Yves Loday who designed the old Formula 40s which are an outdated design, and they look quite similar. I don't know about the weights of the two, but the RS Cat would likely be heavier due to the more volume (more carrying capacity and pitchpole resistance), also the hull has a lot more design features which make it a great boat such as a handle built into the hull making it easier to handle which is great as plastic boats are hard to lift, this also gives stiffness and splashing resistance. The transom is also really reinforced and well thought out.
They are both great boats and both have their strengths. I've not sailed the Topper, but from looks the Topper would be a little bit faster in the low range due to higher performance orientated parts. The RS Cat is built for durability and user friendliness such as durable aluminum rudders, much more durable but not as fine as glass rudders. I would also think the RS Cat would much more forgiving and be able to be pushed much harder in bigger breeze, that volume around the front beam is what all modern boats like the F18 are chasing for this reason.
We also take great pride at RS that we have many dealers to support our boats and parts in inventory.
Not knowing Topper's sales, there are probably about 20-40 of each of the RS/Topper Cat models in the US, but they are all being sailed recreationally.
Happy to help answer any questions if you want to give me a shout todd@rssailing.com