I've been using Enfish Pro for a few years now. I love the product as it is very fast and efficient. And, it resides on my PC and does not feel as "open" as Google Desktop does (security wise). All I really need is a way to find emails, tasks, appointments, and documents fast. I don't need all of the other catalog features of Google e.g., IE web sites and instant messenger.
I tried Google for a while but was not as impressed with the search and find times.
While Enfish is a great company, they have their share of problems. My main complaint with them is that the "product updates" function has never worked. This is supposedly fixed now (version 6.1.3). The other thing is, it is a GREAT product, but their websites lack of "punch" and viable information detracts from an otherwise great piece of software.
The software and company could achieve so much more if they just concentrated on Customer service (upgrade notification and a more current database of Customers) and an easier way to upgrade your existing product.
They put a new CEO in place in September, I'm waiting to see if he/she can turn the damn company around to earn the respect the software deserves. Even today, if I had a choice between Google Desktop Search (FREE) and $50 for the "Find" version of Enfish... I'd still buy Enfish.
I love the Pro version though. Try the trial (of either one Find or Pro) for it's full trial time and decide for yourself. I have had no issues of computer related problems with the software or any installation issues "YMMV" Your Mileage May Vary.
Hope this helps,