Hi Rob, and a big warm welcome to the forum. grin We all love to learn new things and tinker here.

Now to your problem....My first question is, Is your Dad still using the Alroh and how long will you have to wait to acquire it?

Re the Scotty 45, I feel that $600 is a little expensive. You will often see them on e-bay for $300- $450.
A ten blade 17" cylinder reel will set you back $518.32 (yikes)
As far as I know, they don't make a 12 blade reel.

The Rover was worth $1650- $1750 new....so a fair price would be (hard to ascertain) but say $1000-$1200....maybe cheaper if you can haggle a little... grin

There is a business that reconditions Scott Bonnars and a 17" fully reconditioned (6 blade reel) and a brand new 3.5HP Briggs and Stratton retails for $1408. (ouch!!)

I hope this info will help you decide which way to go.
Once again, :welcome:
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin