I have mixed feelings about a Rekluse clutch for a beginner. In the hands of an experienced rider they can be awesome but they can get a beginner into trouble real easy.
I had been thinking that I would like one until I had the opportunity to ride a bike with a Rekluse a few weeks ago. I had a few scary moments and quite a few annoyances.
1) Finding neutral: I typically rock the bike back and forth to make sure I am in neutral before I try to start. It doesn't have to be in neutral, but it makes it a lot easier. It was not so easy to find neutral with the Rekluse
2) Keeping the bike from dying at idle: Don't tap the throttle to keep it from dying unless you are absolutely sure it is in neutral, or you are over riding the clutch.
3) No bump start. When I stop to take a breather on a trail I will typically stop where I can just get rolling and bump start the bike. That don't work with a Rekluse!
4) Parking on a hill: You can't park a bike with a Rekluse on any kind of slope, as the bike wants to roll away without any engine drag.
5) Downhill engine braking: This is a big issue for me. You get on hills where there is no stopping, the best you can do is to keep from going any faster. If you lock the rear wheel then it just starts sliding and then you end up going down sideways. What you want to do is keep it in gear with the clutch out so that the rear wheel keeps turning. The problem is that if you touch the rear brake just a little too hard then it slows down to the point of the Rekluse releasing, and now you have no engine braking. You can get it back by hitting the throttle, but adding throttle is not in my nature when what I really want to do is slow down.
6) Bulldogging: When the downhill gets just too over my head I get off and bull dog the bike down. In this technique you leave the bike in gear, engine off, and use the clutch as a brake. That doesn't work with a Rekluse.
Bottom line, I don't recommend the Rekluse clutch for a beginner.
Your range of bikes you are considering is pretty wide! From an '08 YZ450f down to a '97 two stroke.
Where do you live, and what kind of riding do you expect to be doing?
Rod