What can’t bambino do? [£500]

Help please. For our wedding we were gifted a DF54 coffee grinder and now looking for an Espresso machine. The price point of the Bambino and Plus are hugely attractive, and everything I read say that for a first machine they’re great. But it’s hard to find out what they can’t do to help know if we’re just getting something we will grow out of very quickly. Clearly they won’t be able to do things that higher end machines can, but what in reality are those things, and how much would we likely miss them in the first few years of home coffee brewing? Looking ideally for something less than £500, but could potentially extend to £1000 if really going to make a significant difference. Thanks!