Fins

Looking at buying a new set of fins. I've been surfing a few years, but living in London means I don't get out as much as I'd like.
I lent my board to a friend and unfortunately am now 1 fin short
after it was snapped off so I figure now is a good opportunity for some shopping. I've read the post about fins pinned to the forum but wanted other people's advice on specific fins. I have a 7'10 thruster set up with an fcs fin box. I've been looking at the different Al Merrick fins but just want something for an intermediate surfer.
Any opinions would be great!
I lent my board to a friend and unfortunately am now 1 fin short

Any opinions would be great!