I own or have owned Hollis F1's, OMS Slipstreams, Scubapro Jet Fins, Dive Rite XT's, Deep6 Eddy's, Mares Avanti Quattros, and several others. I currently am only diving Deep6 Eddy's unless I am diving barefoot then the Mares fins come out since I wear them with a 3mm neoprene sock.
The Hollis F1's, Jets, and Dive Rite's were stolen when my trailer got nicked, and I sold my OMS fins years ago when I got the Dive Rites. I loved the XT's, but they don't make a foot pocket big enough for me to wear a real wetsuit boot heaven forbid my drysuit, so I just didn't bother replacing them. The Deep6 XXL's fit my drysuit perfectly and are a smidgen too big with my wetsuit booties, but the XL's were a smidgen too small with the 5mm boot. If I dove more warm water, they'd get more love.
The XT's are really long and have a really snappy kick which is phenomenal, but if you're doing wreck penetration you may prefer the Deep6's. The XT's also require a bit of a different kick style than a normal paddle fin, so the eddy's may be easier to move back and forth with your F1's