I'd say it depends on your skill level, patience, budget and reason for buying it. I speak from experience, having thrown one into the garbage a few months ago - I only kept the clamps to use on a Keller journeyman template that I bought and love!
Now, don't get me wrong: the Leigh is, by all accounts, the most versatile, flexible jig on the market. It certainly has the most options to go along with the best-looking manual. So, what's wrong? I found the learning curve way too steep for a casual user like me (that's the key: if you don't use it frequently, it will be very tioresome to follow the detailed steps - and there are many of them! - every time). There is a lot of test cuts and adjustments before you can cut your dovetails.
Dust collection is ok, but not on a par with table-based jigs. The templates (where the router rides) can flex a bit and tip the router a bit, too. I was using the OF1400.
So, one day, I just tried to sell it, but (lucky me!) the main box chipped on one end and the seller returned it. I threw it in the garbage, absorbed the loss and went with cheaper, easier-to-use alternatives. Yes, I miss the possibility of doing variable-spaced dovetails, but it is not a biggie for me because I'm a hobbyist and I can get beautifully-looking dovatails with the Keller and Woodhaven jigs, which I can use on the router table. One big advantage that these jigs have over the Leigh - other than a lower price - is that they don't require the use of collars on the router base; the bits are guided by their own bearing. If you absolutely need to have variable-spaced dovetails, the Katie Jig (specially the one sold by Sommerfeld tools) provides that.
That's my experience and I hope it can give you a different perspective, for whatever it's worth.
Good luck!
schristl said:
I am going to be purchasing a dovetail jig, most likely the Leigh D4R, soon and wanted to get some insight before I do. I like the ability to have variable spacing and will utilize Festool routers with it. I have searched for info on this site but it seems to be dated so I thought I would throw out a few questions to see what current experiences are.
1. Is the D4R the best most versatile jig to buy?
2. What is the best Festool router to use on this jig?
3. Is it best to get the Leigh bit set or go with another brand like Whiteside?
Thanks for any suggestions or comments you might have. I don't post much but always get valuable insights from this site so thanks to all for that as well.