Orion Xtr/HCCA Or Sundown Audio amplifiers?

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Apologies if these types of threads aren't allowed. i am just desperately trying to figure out if Sundown Amps are worth the extra cost when compared to Orion amps in terms of audio/build quality? Due to the fact that i get good prices on Orion products, i currently own an Orion Xtr 2500.1Dz & an Orion Xtr 1700.4. Is there much of an improvement to gain by switching to the HCCA series? & then if i do, is there any gain in going Sundown instead?

So far from a lot of research:

For Sundown: Smaller & neater, seem to maintain much lower temperatures, possibly better build/audio quality?

For Orion: Much better price, more power.

i've been trying to find information on this topic by asking around in my car audio community & by doing lots of reading & research online. i honestly haven't found much information. i figured where better to find out than somewhere where people have had a lot of experience with the matter?Any help would be greatly appreciated.

Thanks all.