I'm not an experienced RB diver. But i'm a technical diver looking to buy a RB, i have some buddy's that dive RB's and read some stuff lately. This is just my 2 cents.
There is no such thing as a recreational RB(altho some brands claim them to be). They all scrub/mix gasses on the go and are way more complex then OC. My opinion is that a diver should have some knowledge about mixed gas diving(and the risks that come with it) before making to step to a RB. Diving with a RB is also quite expensive when you are just doing shallow dives (dives without trimix).
The scr is a semi-closed rebreather and still will leave some bubbles, it's way less efficient then a ccr. Some years ago i talked to some divers that used the rb80, They said the scr's are safer cause they don't rely on electronics. I'm not experienced enough to say if thats true or not. But i do know some of these same divers are diving a ccr (jj) now that gue introduced the ccr class.
A ccr has a lot of advantages over a scr unit, I wouldn't buy a scr myself.
Another thing to think about is, are you gonne stay within this recreational limits forever? If you pick a decent unit, it can grow with you.