matter of opinion. The biggest, and only important difference are the souls you get. Red Sun include Roll, Guts, Serch, Thunder, Flame, and Wind. Blue Moon gets Aqua, Wood, Junk, Metal, Proto, and Number.
Most people agree that Red Sun is better because of RollSouls healing and Serchsouls Shuffle ability. Me included.
I bought Red Sun after I beat Blue Moon my first time and I was wandering why I could not get mega chips I had in 1-3 like Roll and Gutsman. So I looked up on gamefaqs and found out I need Red Sun so I bought it and beat the game and got everything I needed.
basically here's my point of view for each version Blue Moon
Pro's: Protoman chip ProtoSoul JunkSoul
Con's: Junkman chip Woodman chip Metalman chip Number chip Red Sun
Pro's: Roll chip RollSoul TorchSoul SearchSoul
Con's: Airman chip Searchman chip Thunder Soul Thunderman Chip GutsSoul ( gag me that was terrible) Gutsman ( No challenge plus the chip isn't that great anymore)
So Soul wise I loved Red Sun but a lot of disappointment. Chip wise I loved Blue Moon cause none of the soul's were that bad with my vire other then Wood Soul wasn't as great as I thought it would be.
Can you please explain why Thunder Soul was a con? I thought it was pretty good with its stunning add on to normal type chips. When it came first out, a lot of players who got Thundersoul mixed into their first 3 souls used it to stun the final boss to kill... Then again the final boss wasn't that hard <_< But either ways I just want an explanation cause this is the first time I've seen this.
Nigeru. Response to Punk will never die topic on 10/7/07 "Bob Barker will never die." _tyrtlesoop_
This is just my point of view. Even though my brother did fine better use for him then i did basically i just used my thunders to stun my opponent and then destroyed them with Searchsoul. And plus I Thundersoul was my last soul so I didn't find any great use in it. I was happy just using Torch, Roll, or Search throughout the game. Mainly Search.