It depends on your goals. You’ve not said much about why you want this space to be fitted out, or what you’ll be doing in it. If you’ll be trying to make professional mixes of any kind, you’ll need at least one pair of consumer-grade speakers to test listen to your mix (in both mono and stereo) - in that case, yes, any old consumer hi-fi would do - usually I suggest picking stuff similar to what you’d personally listen on at home as you’ll be familiar with how other mixes translate on that setup. If you’re really trying to maximize utility you could go as far as getting a single Auratone or the various modern equivalents. They sound fine, but they’ll utterly not sugarcoat your material. If it sounds good on that, it’ll sound good on anything. On the flip side, if you’re not terribly interested in doing pro-grade mixdowns for money and you just want to get the best utility out of a small space for enjoying and making your own personal music, where commercial competition isn’t really a factor and you have the liberty to take your more serious work outside to a studio fitted out for mixdown, it might be more enjoyable for you to get a nicer pair of speakers designed for playback enhancement (the Audioengines A2+ as mentioned above are an excellent first choice for affordable, decent-sounding small-space speakers) and just accept that you’ll have to teach yourself how to translate mixes done with them.
Remember, ALL speakers, from the most enhanced studio monitors down to the lowly Auratone and even further to boomboxes and other shite, colour the sound. The famous NS-10Ms were horrid nasty things, but the mix engineers knew them well and could compensate for their vagaries and produce excellent mixes. So, it’s not about what you get, it’s about how well you learn it and learn to translate your work to other things. Nicer speakers just make that process more enjoyable for you, as the artist/engineer.
Now, as for ports: ports are great. They enhance bass response (read: make small speakers sound much larger than they are) and, if used right, eliminate or sidestep nasty cabinet resonances due to dimensional physics, etc. But at the same time, they’re a mass (of air) that’s moving independently of the speaker cone (and thus to some extent not controlled with great precision). This means that they’ll “overhang” the bass response and whatever frequencies they’re resonant at (on small speakers this can go well up into the midrange too) and make for a “muddy” or “overpowered” presence. If you compensate for this to try to make the mix sound “perfect” on a ported speaker, it often sounds thin, nasal, or sometimes strongly resonant in other frequencies on speakers with different portings. Since the vast majority of consumer speakers are ported, this is not really a good thing. That’s why the majority opinion of pro mixers is to avoid ported speakers (even for the cheap listening boxes) - because if you’re not careful and you optimize for one ported speaker it may translate horribly to another, but because non-ported speakers don’t have the same peaky resonances, they’ll translate pretty fairly to nearly anything. Again, is this a hard and fast rule? No - you can learn to compensate and make great mixes on a ported set of monitors. But is it extra work for you? Absolutely, and you’ll get it wrong sometimes.
So yeah, long story short: it comes down to what you’ll be needing them for and how serious you are about turning out competitive professional work or just stuff for your own enjoyment.
Last note: if you are serious about pro quality output (or even just serious about good sound in general) - spend at least as much money and twice or more as much time on treating your listening space acoustically with well-researched diffusion, suppression, and bass traps (if you have the room for them) - you’ll get FAR more out of ANY pair of speakers this way than spending the extra coin on the speakers themselves and leaving the room untreated. Better to have average speakers in a great room than amazing speakers in an average room.
And if that’s all too much, just get a set of Beyerdynamic DT-880’s or 990’s and get mixing, checking your mix from time to time on nearly any handy speaker (in mono, since that’s how, in effect, the majority of music is listened to on phones, computers, and public spaces). That’s far better than a crappy room or heavily compromised main speakers.