I bought and played the megaman X collection 2 to play the stuff I never did. I chose this before the first one because I wanted to eat the shit so the good stuff feels so much better. Heres my experience:
Megaman X5: My first Megaman X game. I love it but after playing other X games I see why people could be like "This is not a good one" Also the intended ending of the X series but apparently capcom said no and made another game behind the creators back that was developed in months. I love the X weapons and Zero moves for bosses, music but what I don't like is being random if you get the good ending or the bad ending. I learned a trick for the ship but nothing for the cannon.
Megaman X6: ugh. Ok so my brother played and beat this game as X and this designed as a zero game. Holy shit props to him. I can play sonic 2006 and he can beat X6 as X. Now this has the most reused sprites from X5 and theres new sprites too but they seem...off. The translation of the cutscenes feel like they went through google translate and called it a day but fun to read though. Cant say the game for the design. UGH! they expect you to take so many pit death to save guys asking for help a dickhead length to the pit floating. If the game cheats, I gotta cheat back. Luckily all cheats for megaman X collection games work with no achievement blocking so you can ultimite armor and black zero this bitch. It helps alot but pits and spikes still kill you. In the first X game you could beat a boss and it would affect the other boss stages to be easier and changes obstacles. This has that too but it can also make other stages harder. Its called the "Nightmare effect" Sometimes nightmare effect happens even though the stage isn't effected by it. How did the series not die here? Avoid unless you like to challenge yourself.
Megaman X7: The first...no wait the THIRD time megaman when 3D and it feels like it. level design is 2D and 3D as you play. There even a thing that tells you if your in 2D or 3D. Trust me its more convenient then it sounds. Axl is cool but switch it to japanese voice acting. This was early 2000s so its not quality english. Robert Belgrade is in this as Signas so if you like him he's in this. I had a rough time playing this but as I played it became more manageable compared to X6. This game also rewards you for exploring alot. If you see a place in the distance you can go there and there will be a person to get with a power up. Whats weird capcom has 2 good open world Megaman games called the Megaman legends 1 & 2 and those are good for a PS1 early 3D. X7 is on the ps2 and its very meh but there are cool moments in this game.
Megaman X8: OH THANK GOD! THE SAVIOR! Megaman X8 is going back to 2D and with mechanics I love and hope they comeback. In X7 could you pick 2 characters and if you died the other one didn't take over. In X8 if one falls the other takes over and continues the level. So many cool thing are in this game. Everything feels much more polished than the last 2 games. You now have a super move with your partner as another way to kill bosses which is cool. Levels have power ups you can buff with the shop and more or less be powerful. Or you can cheat and get the sigma blade and wreak house. I'm glad this series has an end on a high note...or at least until X9 comes out. A good game. Worth your time.
Look forward to me plaything the first collection next time though I played maverick hunter and X4 on the vita recently so I already played 2 of those but not the other 2. Also heres a reward for people reading this bellow in case you never seen this