The answer to this depends user to user.
Single Point Sling (bungee or not) are generally better for shorter periods of use due to the fact they distribute the weight of the weapon (in this case RIF) poorly. However, are great for being able to quickly transition between shoulders and general ease of manoeuvrability. Obviously with a single point, if you let go for whatever reason then there is less control over what its going to swing into. However, if you do let go in case of a stoppage, it will swing naturally to the 'south' position and drawing of a secondary weapon will be easier.
A Single Point sling will also not interfere with your support hand when shooting and it will also need no adjustments whilst in use.
Adding the bungee element to this just gives you more flexibility and manoeuvrability but also increases the poor distribution of weight and how much it will be able to swing around if not under the users control.
Two Point Slings allow the weapon to be carried in multiple ways and distribute weight much more evenly. However, transitioning between shoulders then becomes an issue and depending on how tight the sling is set up, transitioning between weapon systems can also be more awkward (although still achievable).
A lot of two point slings nowadays come with some sort of quick adjustment feature. Usually a buckle or some fancy tensioner tab. This allows it to be carried nice and tight to the body for best weight distribution and comfort and in one swift motion release it to a longer length for operating the weapon system.
Bungee parts of a two point sling again allow the user a bit more instant manoeuvrability at the sacrifice of comfort and control when not held.
If you are using this for simple pick up skirmish games. Personally I would (and do) go with a Single Point Sling as you put it on at the start of the game, run around pew pewing and then take it off at the end with no issues.
If you are doing mil-sims or longer days then a good Two Point Sling would probably be best. They don't need to necessarily have any fancy buckles or tensioners to be workable. Even a simple strap two point sling, adjusted to the right length that the weapon system can be shouldered if required will still be just as flexible. Just instead of using said fancy buckles you will simply have to duck your support hand out of the sling and basically make it a single point sling hanging from your neck for a short period. Obviously not advised for just general carriage as you will end up with a busted neck. This does however then make shoulder transitions workable.