Which plane would you suggest for someone who would like to be able to fly fast enough to break the sound barrier, yet also be able to pull lots of Gs?
What would be the price of such a plane, and how much would it cost per hour to run and be maintained?
Ignoring the various practical limitations that 99.9999991% of people would encounter....
The answer more has to do with what is available than what would be optimal. There are not a whole lot of air frames that fit such a criteria and there are even fewer that are for sale to/in the public hands, when talking about things that exist in the single digit realm for-sale quantity is a real factor.
This McDonnell Douglass F-4 is currently listed for 3,950,000 USD and perhaps gives a good basis for what such a plane would cost. The F-4 carries 3335 gallons of Jet fuel, at my local field where fuel is a reasonable 4.50 a gallon its going to cost you 15000 USD to top off the tanks. Fuel burn depends on how you run the aircraft, if you are slamming it at super sonic speeds all the time your hourly burn rate is going to be high.
Maintenance is harder to pin down. These jets were generally operated by the military so you are going to need to find a mechanic out in the world that is willing to deal with it. You may get lucky and find someone who has some military experience to do the work but if you cant you are going to need to hunt down all the maintenance manuals and related documentation for the aircraft which may be harder to come by than you think. On top of that you need to keep two J79 in working order that may already have a lot of time on them.
If you want to hop to the other side of the pond design wise this MIG-29 is listed for 4.60 Million USD and will get you into the super sonic spectrum and allow you to pull some G's.
So for ~4.5 Million and some non determinant maintenance costs, lets say conservatively 500,000 a year for fuel, oil, incidentals, maintenance, some new tires, avionics and other odds and ends you can have all the fun in the sky you want.
Probably a MiG-21. Some flyable examples are available for between \$50,000-\$200,000, though I suspect some those airframes in an excellent condition will run upwards of \$1 million.
Operational costs for MiGs tends to be surprisingly cheap, though considerably more expensive than operating exotic sports cars or other millionaire toys. At an estimate, I would guess $2000/flight hour for a MiG-21 and it all depends on what equipment is aboard eg hot ejection seats, etc.
Other popular types are L-39s, Folland Gnats, A-4s, F-5s, T-38s, even a Panavia Tornado and a Harrier on the market. They can run from $200000 to tens of millions of dollars and cost thousands of dollars an hour to operate, depending on type.
