Hi,
It really depends how many are needed, how quickly, for what type of computer (OS) and how important it is to save money! Also whether the OP has the time and ability to discover why any particular item might not be working as required. There are several reasons why they might not program correctly: The Signal Polarity, Break Signal requirement, PC
Driver availability and of course whether it's a "Fake", etc..
I've bought three from China at various times, similar to manuka's description, and all work perfectly with PICaxe. Perhaps I've been lucky and I must admit that I usually use Windows XP, but did try one with Win10 which also worked well (however, I don't recall if it was 32 or 64 bit). Therefore, I don't feel inclined to buy any more, perhaps the OP should buy a few and
tell us.
Unfortunately "continuity of supply" can be a problem, the products may change and many Chinese suppliers come and go. Present "favourites" might be satisfyelectronics, "alice" and of course Bangood. The latter has the advantage of some "local" (European, USA, etc.) warehouses (but not apparently with the blue adapters). I also found some locally (to me) on ebay.co.uk .
Many of the listings specify that the adapter won't work with Vista/Win7/8/10, etc. but I'm not even sure that's (always) true. There are several comments on the Bangood site saying that they
do work even with Win10 (but not specifically for 64 bits), probably because drivers have now become available. It's worth noting that most (clone) Arduinos use the CH340 chips (but don't need the inverted polarity of a RS232 interface for PICaxe).
Cheers, Alan.