Are there any substantial differences between the two? Are the CSUSA kits even better than either one?
I find the PSI kits (from resellers) much cheaper, which sort of worries me with regards to the quality (especially since I've already bought some PSI kits). I've only been using slimline kits so far.
Anna
I find the PSI kits (from resellers) much cheaper, which sort of worries me with regards to the quality (especially since I've already bought some PSI kits). I've only been using slimline kits so far.
Anna

With most things, the price normally reflects the quality of the product, and it's a little worrisome to see that the "same" kits could vary anywhere up to 3 or 4 times in prices.
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