Both brands offer something IMO. I used to own this Leman big date...100 hour power reserve and it was for a long time the most accurate watch I owned. Sold it a few years ago as it wasn't getting any wrist time.
The Villeret line is certainly more dressy than the Leman line is, and both have very nice options. I could never warm to the L-Evolution line though. If they made the current Fifty Fathoms a bit smaller, I would probably own one.
If I had to pick a maker as my favourite (hard to do) leaving aside the independents, it would have to be JLC. Used to own the Master Moon:
Great watch, but again sold it. I still have my Master Compressor Memovox though:
Great watch, and I'll be hanging on to this one. Some have mentioned GO, and yes I'm a fan of those as well, and have the first gen PanoReserve:
Again it's a keeper, and GO certainly makes a good number of watches that I would like to own. OP the large companies they would likely be a solid second (and depending on my mood maybe slip into #1 place) as my favourite large brands owned by conglomerates.
I kinda always wanted the Panomatic Chrono...it was very different from anything else out there at the time it was introduced:
Cheers, Al