New,probably not worth the money. Used maybe. There are plenty of used 150's out there for 1/2 the price or less. Look for apo sironar s. I had the apo symmar that they discontinued just before the "L" series came out. It's one of 2 lenses i purchased new that i haven't been happy with. It wasn't sharp past f16. I don't know how much better the "L"'s will be.
I have the APO-Symmar (non L) and have had no issues about lack of sharpness. It is a very nice Gold version of the lens which I bought used 5 years ago. It even got completely soaked in salt water 2 years ago when a wave broke over my head whilst under the dark cloth!
Unless you are using extreme movements, I doubt you will need the larger image circle very much of the time. I don't; unless occasionally doing a 'reverse movements' shot. This is not so effective with the 150 as my 210, so is infrequent.
Mine is in a Compur shutter and given choice, I would prefer a Copal. After the salt water incident, I had been expecting the shutter to pack in - no such 'luck'!
I think there is very little difference between the Symmar L and the Sironar S. Even so, individual lenses sometimes vary and prices can vary a lot (both are especially important to consider if you are buying a lens used).
My attitude is that it is important to test a lens before committing to keep it.
The Schneider 150mm APO Symmar-L is the only lens I actually own for 4x5, right now. I use if regularly for copy work, and my own artsy-tartsy landscape/environmental stuff. I've been very pleased with its performance, no complaints.