If I had $2,500 to invest in Betashares exchange-traded funds (ETFs), I would want a mix of growth, quality, and long-term relevance.
I would also want exposure to themes that can stay important for years, rather than funds built only around short-term market excitement.
Three Betashares ETFs I would consider are named in this article.

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Betashares Nasdaq 100 ETF (ASX: NDQ)
The first ETF I would buy is the Betashares Nasdaq 100 ETF.
This fund gives investors exposure to many of the largest companies listed on the Nasdaq exchange. That means it has a strong tilt toward technology, digital platforms, software, semiconductors, cloud computing, artificial intelligence (AI), and consumer internet businesses.
I like the NDQ ETF because it owns the companies that are shaping how the world works, shops, communicates, advertises, automates, and stores data.
There are risks. The Nasdaq can be volatile, and many of its biggest holdings can trade on high expectations. But if I were investing with a long-term mindset, I would want some exposure to this group of stocks.
Betashares Australian Quality ETF (ASX: AQLT)
The second ETF I would consider is the Betashares Australian Quality ETF.
I like this fund because it takes a more selective approach to the Australian share market.
Instead of simply buying the largest companies, the AQLT ETF focuses on Australian businesses with quality characteristics. That can include strong profitability, balance sheet strength, and earnings stability.
I think that is useful because the local market can be uneven. Some Australian shares are highly cyclical, some rely heavily on commodity prices, and some are more exposed to interest rates or credit cycles.
A quality filter can help investors focus on businesses with stronger financial foundations.
I think this ETF could work well alongside a global growth fund because it adds local exposure without simply copying a broad ASX index. It may still hold familiar Australian names, but the strategy is built around quality rather than size alone.
Betashares Global Defence ETF (ASX: ARMR)
The third ETF I would buy is the Betashares Global Defence ETF.
I like ARMR because it gives investors a way to access the defence theme without relying on one contractor, one product cycle, or one government contract.
That is useful because defence is a broad market. It can include aircraft systems, shipbuilding, surveillance technology, missiles, electronics, cybersecurity, communications, and battlefield software. The winners may not all come from the same part of the industry.
There are clear risks. Defence spending can be political, valuations can rise quickly when the theme becomes popular, and some investors may not be comfortable with the sector. But for those who are, I think ARMR gives a cleaner way to invest in the theme than trying to pick a single ASX defence stock.
Foolish Takeaway
If I were investing $2,500 into Betashares ETFs, I would focus on funds that give exposure to durable long-term trends.
I like the idea of combining broad global growth, quality Australian companies, and a theme that governments may keep prioritising over time. That mix would not suit every investor, and thematic ETFs can be volatile.
But for someone looking to put money to work across different sources of long-term growth, I think these three Betashares ETFs could be compelling options.