I used to use Alps 'boards exclusively, and after I tried the brown Cherrys, I was hooked. The blue Cherrys feel very similar, but click.* The brown Cherrys feel worlds lighter than the Alps compatible switches in the M1. They are so much lighter, that you may think they are linear and too light at first blush. Over time, as your touch develops, you will begin to feel and appreciate the subtle nuances of the Cherry browns. It might sound a little over dramatic, but they are very different switches.
If you like switches that click, I would seriously doubt that Topres would be for you.
*It's important to note that while many people here at GH like Cherry blues, there are also a bunch of us that find the click in the Cherry blues to be somewhat annoying. It's high-pitched and plasticky, but again, many people here like them. I think they feel great, I just don't really like the sound.