I run some Van R’s on the front of my Orange Five and for the money they are absolutely fantastic forks. There’s none of the stiction you get with an air fork (particularly Rock Shox), they are well damped and Fox even provide three different springs.
In terms of servicing, they’re the easiest forks I’ve worked on and all of the parts are beautifully engineered. The key difference I have found between RS and Fox forks is that RS are light because they use a lot of plastic in the damper. Fox forks are all metal inside.
I can’t comment on longevity as mine are just under a year old, but I am still running some five and a half year old Fox Floats and they still have all of their stanchion anodising and they still work beautifully.
As for the lack of lockout, it’s not something I miss and I do climb out of the saddle on the Five a lot.
Right now I don’t think that you can get better value for money in a fork than the Vans and when your wheels expire you have the option to buy and fit the QR15 lowers if you so choose.