I spent about an hour discussing with a couple neighbors the ins and outs of New Holland, Vermeer, and John Deere balers. Someone will disagree strongly with this, but here goes.
New Holland- Either now or earlier, we have all run them. The 660/664/688 were real good. Then they went downhill. We all wanted one of the others to buy a new one to try first, because we all hope the BR 7090 is as good as the old ones. If they are, we will own one. One upside to them over the others is 2 twine arms over a single arm with 2 strings. I can tie a bale and have my tailgate shut in less than 35 seconds where the others take 45 or so just for the tie process. The tailgate moves faster than Vermeer but not faster than JD. The kicker is simpler. Vermeers kicker is good for hills in that it doesn't push them hard. I have seen bales roll a long way behind a JD. The downfall is the twine tie system has a lot of moving parts. Dirt, chaff, etc can build up and make it not work properly.
John Deere- I think we all agreed that they were probally the best built, toughest, more than likely the longest lasting. The problem is the $50,000 price tag, the slower tie(net wrap becomes more likely if you tie slower) and the JD dealrship around here has went through changes and we aren't sure if they are done.
Vermeers- One guy has one. He likes it just fine, but he has had a few things go wrong. 12,000 bales and he has had to put all new teeth in, broke his drive shaft($1,000) and put new belts on($2,000) I know another guy who has one that has had a couple rollers with bearings go out, so I am not completely convinced.
I guess it comes down to 2 things.
1- Like most everything, you get what you pay for.
2- Just as important, who you are comfortable dealing with.