There's also a Sironar Digital 70 HR; the problem is that no more helicals are made for the 60 natively and mounting with all manufacturers is in the 1-2k+ range, more in the 2k range if you need a tube - which puts the lens at the SAME OR MORE price level than the 70 HR which by all accounts is its replacement.
I've seen multiple 70s go for the 2k-2.5k range - except Alpa - which explains why most of the time it is IMHO the better choice as it has 100m IC, which is significantly more than the 70mm IC of the 60mm. Essentially the 70 is almost as cheap mounted in the used market, can shift all the way on a large tech cam - 100mm is huge! - and is brilliantly sharp.
To put this in perspective: on a full frame I can shift the 70mm 22.5mm left right, the 60 HR would have almost no shift. That's a biggie. I am sorry.
If you can find one sub 1k, say 750 or so it is worthwhile to look into it - there's often a sironar digital 55 for example which go for sub 1k, but there's a reason the 70 HR is the current staple entry Rodie lens and the 60 has been discontinued.
There's no advantage IMHO except for collection purposes or if you can get it way cheaper than a 70.
We just had a perfect copal 70 HR sit around the forum for a while for 2k - why would one forego all the advantages of 30mm more IC (100 vs 70!) for a tiny sum on top?
With 70s often readily available, the appeal of the 60 is reduced, unfortunately and add to that ofc the availability of the 55 SD for sub 1k often!
I find the 90 Sironar W a more interesting option as the delta to the 90-SW is ginormous price-wise and its still an excellent lens.
It always puzzled me to find the 90-W trading hands for under 1k - its the best bargain out there.
As said, looked many times at the 60, always realized I have a 70 and its more a wish to collect than anything else.
In terms of hiearchy of best moderately priced rodies I'd recommend:
1) 70 HR (2-2.5k unmounted)
2) 90 W (<1k! unmounted)
3) 55 SD (<1k! unmounted)
The 55 is very cheap compared to the 50 W and still a good lens for most if you're not super stressed about extreme sharpness shifted.
The 60 HR falls between the cracks somehow between the current 70 which is the cheapest list Rodie and the 55 SD which can be had for not much.
The small IC essentially kills it for digital backs except for Fuji and the crop Hassy back - which would be the main use case; but here again only if you get it at a bargain as you might as well spend a bit more and get the 70 or stick with the 55 which is also very good and regularly trades at the 1k mark.
IMHO the focal length problem in itself is greatly mitigated by the existence of the 55 and then 70. 55 is close enough to 60 I'd say ...
And another thing on old lenses like that. We are talking 2008 era glass, meaning you'd need to make sure the copal is well aligned - which is why its so crucial to buy from a specialist like Alkibiades. I've seen unwell calibrated old HR lenses and its a pain cost-wise to fix it at Rodenstock. We are talking about almost 20y! HR lenses where tiniest copal issues lead to uneven performance left / right ... 20y is a long time for a lens to exist free of bumps, mishandling, etc.
Ie with HR unbent copal is crucial - fixing it via Rodenstock means AU replacement which means 1.5k+ ...