VWR lower mount has a machined outer casing and bolts , as opposed to more OE like plastic casing for the THS lower.
I would buy the full THS set
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lol (which would be about the same price as just the lower VWR!), you can fit the upper mounts later
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Lets face it no matter how nice the VWR mounts are they are expensive (but very well made), do you need that extra enginneering ? Id say not for the lower mount.
THS would be just fine and considerably cheaper.
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Dont forget lower can have higher fitting costs (unless you DIY) , plus geometry check after is advised (but not mandatory)
My review states I should always have done all 3 mounts together, i still stand by that, although I do recognise that it may be a step too far for many GTI fans in terms of noise + vibration.