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Aqualung Legend or Aqualung Titan are decent models as well.
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Aqualung is a world class manufacture and I sell them three to four times as often as I sell other brands...combined. But I would never call the Legend nor the Titan decent models.
The Titan is an Unbalance 1st and 2nd Stage. I recommend unbalanced regulators only for small children since they have depth limits that are very shallow or for cheap divers who feel saving a few dollars is worth the least performing type of regulator design.
The Legend is the flagship of Aqualung. It has an Overbalanced 1st Stage and a Balance 2nd Stage with optional air flow adjustments. But as good of a design the Legnd is I would not recommend it a a starter regulator set.
I recommend to my diving community (approximately 200+ new divers annually) always spend a little more and get a Balanced 1st & 2nd Stage. Octos can be unbalanced as they are for an emergency only and the dive is over at that point. But most serious divers usually either get matched Balance October or a second matching 2nd stage regulator.
Here are my suggestions:
Atomic Z3 - One of the best engineered regulators on the market. While it is recommended service intervals of 3 years or 300 dives, it was designed to 5 year intervals / 500 dives. This is what I bought my wife when she got certified. I dive with the B2 for personal dives. Not the least expensive. But the best for the money. If there is a drawback it would be service part could be challenging to find outside the US (but not impossible).
Aqualung Core - For a starter regulator Aqualung got this one right. Balanced 1st & 2nd Stages that are basic in design yet function great. This is the model I have in my rental fleet and it performs really nicely at 66 ft (20m or 3 ATAs) or at 132 ft (40m or 5 ATAs). The Automatic Closure Device on the 1st stage is nice for new divers who might forget put the dust cap on during cleaning. The ACD keeps the 1st Stage water tight until placing the regulator on a tank which opens the ACD when the thumb screw is tightened. One of the easiest brands to get serviced worldwide; service intervals are 200 dives or 2 years. My top seller to new divers.
Scuba Pro - The third model I would recommend is the MK21 / S520. These are a slightly de-engineered version of the MK25/S600 regulators but with a few less features and about $150-$200 less. Great regulator for new divers who dive a lot (which might not be the best model for the OP who said they were not diving much). Typical service interval of 200 dives or 2 years. Another brand that has worldwide recognition and easily serviced.
These are my recommendations for a new diver.
Other brands, either I do not have anything nice to say or little to no experience with them.