Help with IPTV boxes

I have 3 boxes sitting at home and not sure which one is best and how to compare each etc. I really want to utilize them and avoid buying more electronics. I only need them for IPTV, i talked to someone who sells subscriptions for international Chanels and that’s all I need to watch. No other applications, I want smooth TV when I’m in the mood to watch it.

• MI BOX MDZ-22-AB
• T95X (missing the remote)
• MAG254 (seems locked now, probably from a previous subscription)

My TVs are old (Sharp LC-40N5000u + Samsung UN40F6300) and I will probably just keep one of them (leaning towards the Sharp). Thanks in advance !