I was tempted to make a similar comment in this thread, although admittedly I am biased since I've had my MGB for quite a long time. It was where I wanted my classic car journey to start, and for the time being at least I'm content for it to stay there.
They lack the German precision of any VW products. All said and done they're actually pretty crude vehicles with leaf spring live axle rear suspension(in a sports car made until 1980) and tops that are not exactly easy to raise.
With that said, they're dead simple. Water cooling does add an additional dimension that you don't need to worry about on VWs, but also allows you to have reasonable heat when temperatures get colder. Of course too you get a more conventional front engine layout.
For a classic, though, this to me is a big selling point-they are actually usable in modern traffic. They're not the fastest vehicles around by any measure, but will run 80 all day if you want them to(and yes that's true even without overdrive, although overdrive lets you run at 3200rpms at 70 rather than 4000 and 3500 at 80 rather than 4500). Not that I recommend it, or will even admit to actually having done it, but a factory high compression engine(8.8:1, as fitted in the US 62-71) won't break too much of a sweat doing 100.
For a small car, and especially a 60+ year old design of a small car, they are quite safe. The brakes are excellent with disks up front and drums in the rear. They do have engineered crumple zones, and back in the day the factory was fond of showing off crash tested cars. 70 and newer should have 3 point belts from the factory.
Like any other vehicle, classic or modern, rust is the most expensive thing you can buy. As they are unibodies, almost all panel rust will compromise the structure in some way, but they are also quite stiff and rigid compared to a lot of their contemporaries. Other than that, most parts are available easily. The engine sometimes is called a bit crude or agricultural, but it is amazingly reliable(and plenty of shops that work on them can tell you stories of "how was this thing running" cars that were driven to them) and of course simple. They can be built up a bit hotter without too much trouble. Learn how the SU carbs work and learn to work on them and you'll be rewarded with a great running car that makes great power across the whole RPM band.