With respect Elliot, you do not need the best, but feel free to spend many hundreds of pounds on one if you wish.
I have an irrational 'thing' about Multimeters, seven or eight when I last looked.
There are not any that are particularly easy to use but some have features that make them a bit easier and safer to use than others (lots of tutorials on youtube).
For a budget meter I can recommend the Habotest 118A (I know of the 118a being sold under at least seven other brand names, Kaiweets being the most common encountered).
This meter has auto ranging and illuminated probe jack ports to assist you in selecting the correct port to insert a probe into, very helpful actually, it has a decent decibel level for the continuity sounder, non contact voltage and many other features. It can be had for under £30.00 and I don't know of any other DMM that beats it for value for money.
Darren Walker's review regards it highly as do other reviewers, e.g.
Habotest 118A
For something that some would say is the only meter you will need then this is also a meter I can highly recommend, does both AC and DC, the Uni-t 210E.
UNI-T 210E