I was a little kid when I first saw BB6 and Roberto was my favourite because of his accent.
When I watched it properly a few years ago though I really enjoyed the conflict, the fun, and some truly iconic Housemates that got everyone talking whether you loved them or hated them.
Imo you'll not get many people like Makosi, Craig, Science, Maxwell, Saskia, Derek, Roberto, Kemal, and Lesley all in one series causing such huge discussion at different points of the series that they was in.
The only downfalls imo was the Irish vote keeping Orlaith in over more popular Housemates with the rest of Britain, the final two being really dull and offering no discussion to the series whatsoever, and Kinga making the final night when she'd hardly been in the series. Other than those things though it was a very fun year and had some of my favourite Housemates ever, especially on a personal level I found Science to be very amusing to watch.
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Jimmy Floyd Hasselbaink and River Song as my Strictly 2025 Sweepstakes, and eventual winner and runner-up of the series.