It's purely a matter of preference. I'm using a Sekonic 758D, it has a 1-degree spot meter function which allows you to meter far away objects with its viewfinder, though this model would be out of your budget. Best to read reviews, see which features match up well with your Minolta.
I really love the spotmeter, great for landscapes, but it is an expensive one....
And I don't know if the cheaper models have that option.
But if you don't have one with a spotmeter, the spotmeter in your camera will do the trick.
Lichtmeters are mostly used in studio, and modelling work where you can get at the subject.
If you don't do that sort of things and only make landscapes, ask yourself, do I really need a lightmeter ?