hi, i am commenting based on my experience with a few types of androids and media players, don't know all of them.

others, please comment too!
yr case.. it is  easy for a few things, hard for others. so. u may have to rethink a bit...

.. 10mbps is fine for SD and "some" HD provided it is dedicated. if u have others users taling up the bandwidth, may not get HD. also, 10mbps fluctautes and is not stable all the time. lastly, wifi is not as good s ethernet, more so if u are using stock router which tends to underperform.

.. lives sports, incl EPL... that is the MOST difficult one. these are big $ event, u can't get free reliably. if u can, those sponsors, broadcasters and iptv operators will close shop. if u look hard enough, there will be some SD channels showing some of them.

.. english stuff is easy, chinese (mandarin) is easy. hk/canto - hard to get free and reliably. i suggest u do not think in terms of aztro supersports and wahlaitoi - these are aztro proprietory, they spend a fortune to block pirates and raiders.

.. ahem iptiv - these, u need to pm and deal with sellers. as they are illegit, there is no quarantee of service, u pay upfront. i really don't know if they are any good for long term.

.. budget rm500 will get you 1gb/8gb android. 2gb/16gb will cost rm600-rm1k. the diff is mainly the memory - bigger memory let u do more apps, less need to remove, erase files all the time.

.. ubox 4k... there are like a hundred brands out there. the difference is really the popularity meaning there are many users who can share and help u in forums like this. another diff is who and where u buy from - some sellers will pre-install some good stuff for you, ready to play; some will send u an empty box, u DIY all the way. for beginner, there is a lot to learn, so best to buy from a seller who can help or there is a website u can get help.

the most popular brands according to the comments in this and related threads are: minix, himedia and mibox. a last one, nvidia shield should be good but price is highest. search the threads, read, ask questions, u will be on yr way to getting one!
https://forum.lowyat.net/HomeElectronics&WaresGarageSales

a final word - boxes like these are not meant to replace aztro or hypptv. they offer diff and alternative things. it takes a quite bit of learning and patience to make it work well. not recommended for elderly people or people who have no interest in IT, gadgets and devices.