What type of corals do you intend to keep? I think a pair of 6095's would be ideal for mixed reef or LPS and softies but more flow may be needed for SPS dominant tank.
If the SPS will be nearer the ends the 6095's will work well.
The first ones now on the market are 19mm, but this will change to 15mm in the next shipment and the 19mm magnet will be an accessory. Unfortunately, the cost of magnets has gone up 600% since January and the only way to keep prices from increasing was to weaken the magnet holders and if you need a stronger magnet, it is a separate part.