I just acquired a 1960s Linhof Rekord with mated pan/tilt head. This thing is heavy! Perfect for my 4x5. The amazing things is, I bought it at a camera shop for for 60 Euros, even though I've seen the same thing on auction sites going for 200-600 dollars!
I have a few tripods but my favourite is a Linhof which I inherited from my father. It came from a studio he used to work in many years ago.
I was lucky to find an old wooden Ries tripod with single-tilt head for the bargain price of $100. It holds my heavy 8x10 rock-solid. Used Ries tripods aren't easy to find and I don't know if you're located in or near a big city, but if you happen to run across a lighter model, I'd recommend it without question.
I have a few tripods for large format. I started out with Manfrotto 3221 legs and 3047 three way head. This is a fantastic tripod for the money but, a little heavy for the trail. Like I said, I have several others but the Berlebach 8043 Report is by far the favorite. I should probably just sell all the rest.
If you want to go cheap then you just can't beat an old used aluminum Tilt-All if it will support your 4x5. I use one with a Crown Graphic with no problems.
If you want to go ultra light carbon fiber then Feisol is really nice but Gitzo is more expensive and the best in my opinion.
If you want to go wood then Berlebach is really nice but Ries is more expensive and the best in my opinion.
I use two Ries tripods (A100 and J1000) and a Tilt-All. I have owned Gitzo and Berlebach. I have never used a Feisol but have read the specs so I am pulling a Ken Rockwell here.
Someone mentioned a Majestic which is a very fine tripod but overkill for a 4x5 field camera.
Sorry about that but I meant Ries J100 and not J1000.
Mine is wooden. A Berlebach 9033, take large format without a hitch. http://jabcam.wordpress.com/2012/04/14/a-wooden-tripod/
I have a Majestic, it is a beast, but I got it for a song, so it was worth it. I need a lighter tripod for the field, but for now the Majestic will have to do.