Well... hello, new member... and welcome to our little corner of the world!
I see you read through this thread and came across my little story. But you gotta keep in mind that that was a long time ago. Like, 30 (!) years ago. So 'those' Alpines weren't like current Alpines, mind you.
That being said... have I heard (more) recent Alpine decks? I have... used to have one about five years ago in a vehicle I sold (just the deck, no fancy multi-amp system). I liked the sound quality, which was what drew me to Alpine many years ago. But - my current deck is a Pioneer, and I think the SQ of that deck is fairly close to the quality of the latest Alpine that I had. Neither is / was a 'top of the line' deck. I tend to be picky with sound quality (much less than I used to be).
I think Alpine still puts out a good product, so if that deck has the features you like, and you like the way it sounds, then I think you'll be fine. I never had a problem with any of them that I owned.
This would be a long, long discussion of an old thread if I were to go into different brands, pros / cons -- so I won't do that. I will say that I didn't like the website you referenced, as it looks like one of those that are done offshore by non-native speakers trying to pass themselves off as an 'authoritative' type of site, looking to generate revenue from clicks / ads (and I mention the 'non-native' only to illustrate,
not to denigrate the writers, personally -- I saw from your profile that you are from NLD, and I'm not xenophobic)
Anyway... back to your questions. Only 1 USB? Not a deal killer for me. Many manufacturers put that one USB port in the back of the deck. That
can be a problem -- until you find a vendor on Amazon or Ebay that sells a 3ft or 6ft (1m / 2m) cable that connects to the port on the HU, and has a USB port on the other end that mounts in a spot on your dash wherever you like. (My 2003 US-spec Envoy has two (or three?) 12v power ports, as well as a cigarette lighter in the dash -- I ripped out the lighter and put the USB port there).
If you need more than one USB connection (I don't), see if the instructions for your deck specify whether a USB hub can be used. Not sure why you want / need more than one, so I won't go into a deep dive on that. Also, note that many USB ports in aftermarket head units are rated at 1.5 - 2.0 amp -- and those will charge a phone very, very slowly (especially if it's sub-2.0 amp) So if you're looking to use it to charge the phone, better to use a dedicated charger plug / outlet for that, unless your trips are very, very long.
A few last words on the unit you linked to...
- It does not have a CD player (these are known as 'mechless' units). Many people don't use CDs any more -- but if you do, you don't want a mechless unit).
- It's listed as a 'satellite' radio - which would mean SiriusXM, and as far as I know, that's only available in US / Canada.
- It has HD radio (again, not available where you're at, IIRC). I like HD radio -- when I'm in range of a station, that is. Great if you're in / near a large city, not so much if you're not.
With those last two items... if you can't use them, it doesn't seem to make sense to pay the extra money for them. I think a more useful feature would be Android Auto / Apple Car Play, especially the newest versions that don't require the phone to be tethered to the HU via a cable (and then you can use the USB port for a portable drive full of music, etc.)
Good luck, whichever unit you choose. Also, so you know - on our site, it's usually best to start a new thread, rather than 'wake one up' from 2 years earlier. No harm done; just something to remember for the future. Thankfully, when you used the '@' symbol with my username, it sent me a notification referencing your post -- otherwise, this post might've gone to the 'bit bucket'
Hope that helps!