Jfrech, I am not talking about the obvious pops and clicks, rather the top end sounds brighter and the dynamics become more evident and quick. This is not at all to suggest that records cleaned with my several VPIs did not sound noticeably better than in their original condition. I strongly suggest that the substantially groove by groove cleaning with the Loricraft and Keith Monks machines is the better way to vacuum. I once got metal stuck in the pad on my VPI and ruined one place in several records before I noticed what was happening. I don't know where the tiny sliver of metal came from. At very least, with the Loricraft the advancement of the string would leave a single record damaged and perhaps not even this the the stronger vacuum might just suck it up immediately.
Initially, I used the Loricraft with Disc Doctor, RRL, AudioTop, and later L'Art du Son. I had used Disc Doctor with my VPI. Records that I initially cleaned with the Loricraft sounded better after another cleaning with the Walker. This is to suggest that both are contributing greatly to my results.