I've got a good collection of fins over the years since they make good presents. Currently I can review the following.
Cressi Frog Plus EBS: - Great fin and used them for about a year until I got my Mares Quattro Plus fins. I didn't notice any improvement in my frog kick.
Cressi Thor EBS: - Very powerful fin. Same performance as SP Seawing Nova's. Though the rubber spring strap (EBS) didn't lock well and EBS strap keep falling off, Cressi support wanted me to use standard non-bungee, felt like a new production design issue and after a couple of dives and months the seller let me return them.
Cressi Light & Short Full Foot Pocket Fins: - I've taken these on two Caribbean Cruises and used them on 30-40ft dives. I got looks and a couple of "You know that those aren't made for scuba diving right?" But the DM was fine after looking at my logbook. I've found that they are the perfect travel fin and provide enough propulsion in calm and shallow dive locations.
ScubaPro Jet Fins: I got these fins for a specialty diver course. There is noting wrong with them and will do what they are designed to do, but I just find them just OK.
ScubaPro Seawing Nova's: They are so weird looking, but work so good. If you want to fight a current or speed past everyone these fins are it. I use these on all my deep dives and ocean dives though they are long.
Mares Avanti Quattro Plus: - These are my go to fins. IMHO the best all around fins.
Mares X-Stream: - Used for a summer and put them away. They were alright, just not my personal choice.
Aqua Lung Phazer Fins: - Got these a couple months ago and used them for 20mins in the pool. They were comfortable and can't say anything negative. Though like I mentioned only used for about 20-30min or (1500PSI) in the pool. spent
Oceanic Manta Ray Fins: I've only used them a couple of times this summer. I got them in May. They are really unique. Like beaver tails or kayak paddles on your feet. The spring straps are awesome in they way they adjust and the placement of the thumb hole. The These might be my new favorites.
Best all around fin: Mares Avanti Quattro Plus