I own the Bravo1 in A2, the HRLM and the RMD, and my favorite by far is the RMD. If you're trying to decide between ESEE and SwampRat offerings and are savy at reselling, I'd recommend buying both, testing how they feel and do some light cutting, then sell off 2nd place.
The HRLM is similar in size to the Bravo1. It has a thicker edge (as others mentioned), so find one reground/reprofiled if you can or do this yourself if you prefer better slicing to edge toughness. BUT the HRLM (and ESEE-4) has a slimmer profile which I have found makes it better at splitting wood and general handling, and it is more comfortable (and has better grip) in my hand. It is a
very tough knife, I have more confidence in it than the Bravo1 (which has a
very thin edge).
The RMD is an excellent length, is well balanced, has a working choil, feels light in the hand and handles smoothly. Once I handled mine, no other knife has felt as comfortable, secure, reliable, and the RMD does not disappoint in regard to performance. Like the HRLM, it is a
tough knife. The extra length and slimmer profile make it many times more useful than the Bravo1 (and potentially the ESEE-5) for heavier tasks.
Edge-retention is phenomenal! The RMD I received also suffered from an overly thick edge, but reprofiling has not noticeably reduced edge toughness and retention. If you buy one from the company store, ask Eric to send one with a lower bevel-angle - he has had customers send him back knives for reprofiling if unsatisfied, part of the warranty.
The handles on the HRLM and RMD are exactly the same, very comfortable and 'grippy', preferable to the ESEE handles imho (too blocky). Azwelke makes excellent sheaths for both at a
very reasonable price and will do custom jobs - he made my HRLM sheath compatible with the ESEE attachments. Another option is the Spec-Ops Combat Master (small size) and other offerings - remold the platic insert to suit either the HRLM or RMD, both will fit (the RMD perfectly).
Neither SwampRat nor ESEE knives are as 'pretty' as BRKT knives (coated vs satin finish, which seems to account for much of the price difference). The HRLM and RMD probably have thicker factory edges than ESEE knives (certainly my Izula was thinner) and are harder to sharpen imho, but also have better edge-retention. They are phenomenal tools that only increase in value over time. That said, ESEE is less expensive and also very reliable - if they feel comfortable in your hand, you won't have gone wrong making the purchase.
Okay, that's a long enough post. Good luck on recouping your Bravo1 $$$.
