To simplify Perfect sizing...
Perfects sized in inches followed by x/16" or x/8" are trout reels.
Those marked x/4" or 1/2" - or without any fraction - are salmon reels with wider drums. Yes, you can use the larger trout reels for salmon but they were designed for heavy single-hand rods, not for 2 hand rods.
Chas - previous post - says the same thing but without explaination.
For what its worth I have found that the 41/4" is probably the most useful reel for heavier spey lines, the 4" for typical 9/10 lines and the 3 3/4 for the lighter lines. (The 3 1/2" is really best on a singlehand or "switch"rod). I base this on requiring 200yds or more of 30-lb. Micron as backing.
The back-row reels shown on my Avatar are 4 1/2 through to 3 1/2" excluding my 4 1/4" which a friend has borrowed. the shiney narrow drum 4" is an early Farlows Perfect knock off.
The front row are various Bogdan knockoffs, except for the Hart (marked Orvis) at the far end.
Last edited by tweedside; 03-11-2007 at 12:04 PM.