I have decided to replace all my current reels with Nautilus FW reels. I have the FW3, FW3+ and FW 5 and FW5+. The + system is a unique way to match one reel with various rods and lines. With a FW3 and a FW3+ spool, you can use a 2 or 3wt line on one spool and use the 3+ to hold a 5 wt line with ample backing utilizing the same housing/cage. Instead of having different size reels to match different rods, you can now match them up more precisely. As their name implies, they are lightweight, matching nicely with today's lighter rods. I prefer the Tianium color over the Black as it matches nicely with my Scott S4 rods.
More info from the Nautilus web page. http://www.nautilusreels.com/reels/fwplus
Compact Lightweight Reels
Pairing the Nautilus FW 3Plus reel with a WF5 line will give you a more compact 5 weight setup, yielding increased backing capacity and reduced weight. These reels are ideal for the fly fisher who is looking for a more compact package, whether driven by need for added versatility or just personal preference.
The Nautilus FW Plus reels were designed to offer an increased range for either backing or line weight allowing you to pair more rods or fishing conditions to your Nautilus FW series of reels. FW Plus spools can be interchanged with regular FW spools for added versatility, allowing you to convert your existing FW 3, 5 or 7 to a FW Plus series.