Aljoe,
You'll find the Model 34 is definatelly no slouch, and it is FAR easier to master than the hard to hold 350Magnum. To be honest, the 350 is an experts rifle, one you would get after you'd shot powerfull rifles for a considerable while, and understood the delacate controls necessary to maintain a proper "Hold".
The Model 34 comes in a number of calibers, and presents a numbet of probable and usable ft lb levels and trajectorys to choose from. Generally, one would select the .177 for all around use, the .20 and .22 for hunting. However in any caliber, very good accuracy can be expected from a properly broke in and lubed gun. BTW, the Models 36 and 38 are essentially the Model 34 action, but with refined stockwoods, trimmings, and finishes.
Personally I already own a Model 35 in .177cal, a lesser powered, much older, but similar large Diana break-barrel. So if I were to choose a Model 34, 36, or 38 for myself, it would be in .22 caliber, just for a change...
The Model 34 is very well made, quite accurate, and will last a lifetime, (more likely two!), they are a real workhorse when "stock" and can be custom "tuned" fairly economically, into being excellent rifles!
HTH,
ZVP