[Blade Raider]

I've watched both. Watched GUIS subs long before the DVDs were even a thing and because I dig 90's Sentai I jumped at it on DVD. The only notable difference I found was the translation of the mecha finisher. Shout's translation is "Super Legend Thunder Cut" and GUIS's is "Legendary Thunderslash." Both are right, I just noticed it because I think Legendary Thunderslash has a nice ring to it. Other than that, maybe some names are spelled differently.

There's barely a difference. Support the official release. There's nothing wrong with it. Also, it's still streaming on Shout's website for free (along with Dairanger) if you want to compare for yourself.