If you want a cheap, compact and extremly sharp lens: simply go for G-Claron.
The lens has still very large image circle with image angle about 64-68°, starts with F9 and weighs 1/2 of the Symmar/Sironar.
It is a similar lens to Fuji A, but much cheaper to get.
Apo Ronar 360 mm is also a very sharp lens and very small too, but will not allows much movements (46° imageangle)
I made the best experiance with a 270mm f/9 Schneider G-Claron. I bought one with a few thin scratches in the front glass für 20 Euros and it is an incredible sharp lens.
A like new lens cost more.
The advantage of the Schneider lenses is you can mount the lens cells directly into a shutter. The 270mm fits in a size I shutter.
A good choice is an old Dagot lenses, don´t worry when it is not coated, the lens design avoits reflexions. A 300mm Dagor has a huge image circle and is pretty small.
The problem is that it is rare and in good conditions not as cheap like a G-Claron.
I have a Dagor clone from Schneider, already coated, made in the late 1940th, a 6.8/360mm in a Compound shutter, image circle is official 650mm (25 1/2").
When you have a chance to get one of this lenses is is a good choice as well.
A Schneider Symmar 5.6/300 is a great lens too, with a little bit luck available for less than 250 Euros in Europe, mounted in a Compund shutter.
This f/5.6 Symmar lenses are not so big and heavy like the later Symmar S f/5.6