The bargain Beech is the short-cabin, IO-470 powered J35 - M35 (1958-60) models. Two years ago we bought a low-time, pampered K35, and so far have been spending less on annuals and routine maintenance than we did on our Grumman Cheetah. The original engine was 250 hp; ours had been upgraded to a 260-hp IO-470-N. We added a used KNS-80 to make a decent IFR ship out of it.
Useful load is 900 lb; it carries 64 gallons usable (enough for PDX -PHX with one intermediate stop; PDX - MKC on two). We flight plan for 150 KTAS and 13 gph at 12,000 ft; actual cruise numbers are more like 155 KTAS and a hair under 12 gph.
(The 1958 J35 and the 1959 K35 are the same, except the K35's standard tanks hold ten more gallons, 50 vs. 40. and gross is 50 lb higher.)
Yes, Beech parts are expensive, but they don't break as often. I don't think there is any problem getting parts for Bonanzas of this vintage, whether through the factory, salvage dealers or otherwise.
Obviously the key was to find a basically sound airplane. Our Bonanza had been hangared and cared for by a doting owner for 33 years, so we were fortunate. If you find a good one, you have a quality, well-performing, comfortable machine, with unexcelled handling qualities. That's a pretty big "if," though, as there are a lot of dogs out there.
Used Bonanza prices go up sharply with the 1961 N35, which added the longer third window, hat shelf and larger tanks, and the 1962 P35, with the redesigned instrument panel. The 1964 S35 introduced the IO-520 and full-length baggage compartment, so its prices are higher still. There seems to be a premium on the prices of the straight-tail models, so that even the 225-hp Debonairs go for as much or more than higher-powered V-tails of similar vintage. The 10-inch-longer 36 series is the most expensive, though slightly slower than the 33's and 35's.
1961 and later models are easily loaded aft of allowable CG. The 33 and 36 series have similar concerns but to a somewhat lesser degree. Older models are not as bad in this regard; in fact, we often have to work at not being out of the forward CG limit. The difference is, in 1961 the fuel tanks were rearranged to put more fuel in the leading edges of the wings (so CG moves progressively aft as fuel is burned), while gross weights went up and baggage areas were extended further aft. The control harmony and feel of the Bonanza line are among the best in the sky. They are easy and satisfying to fly, and very easy to land.
There is little perceptible difference in handling between the V-tails and the straight-tails of similar weight and power, except many claim that the lateral oscillation in turbulence is worse in the V-tail than the others. No biggie, just a little pressure on one or both rudder pedals seems to dampen it. (I honestly think a V-tail's tail-wag is less than that of a T-tail Arrow, for example.) The greater difference in handling is between the early 35's and 33's on the one hand, and the later models with big engines and higher gross weights, on the other.
The IO-470 is a 1500-hour TBO engine. Ours seems to run smooth and cool (I try to climb at high airspeeds and usually cruise at high altitudes, where max power is 65% or less), with very little oil consumption. J35's can have many differrent kinds of propellers, including Beech, Hartzell and McCauley. Check for AD's, especially on the Hartzell.
It is highly recommended to join American Bonanza Society and/or World Beechcraft Association, for excellent information and resources. Recommended books include
Those Incomparable Bonanzas by Larry A. Ball, and
Flying the Beechcraft Bonanza by John Eckalbar.
For some photos and background of our airplane, see
http://www.geocities.com/grumman365ps/bonanza1.html
-- Pilawt