Trout reels are first and foremost a place to store line. Most trout outside of Labrador, Chile, Argentina, and New Zealand are played by stripping line in and thus the heavyweight features of the more expensive reels are not essential to the aim of the game. If you want to get the top dollar reel, I say go for it. But, I have stable of older Hardys from the Featherweight up through Hardy Marquis 7 hanging below my trout rods from 3 up to 7 weight. I have splurged on a couple of the small Bougle' reels because I like the look. I wouldn't say no to a smaller Perfect in LHW, but the extra weight may throw my lighter weight graphite rods out of balance. We have to remember a lot of the older classic reels were designed and made for use on much heavier bamboo rods.
Buy what you can afford and appreciate, but don't kid yourself into thinking it will be a necessity for 95% of your trout fishing.
I have to agree with glcaddis. You don't need anything fancy to handle trout, or anything else that lives in freshwater. Of course need & want are two different things & we all fall into that money pit. Able's, Tibor's, etc.
But if your trout fishing includes much still water, especially from a personal floatation devise, you soon find the floating line to be of little use & start trying other lines. Eventually, storage & changing lines to suit the prevailing conditions becomes a problem. If I had it to do over again, I would invest in a decent cassette reel and a lot of spare cassettes.
One day while browsing the offerings @ Marriott's fly fishing store, I spotted an Okuma Integrity I 7/8wt large/wide arbor reel. Yeah, I know, cheap Asian made stuff. But wth, it's a gonna be a trout reel. It was type III black anodized & had a big star drag adjustment knob reminiscent a Charlton,,, & of the price was right. The drag system was not sealed but then again, everything considered, it would be OK. That reel became my dedicated 6wt floating line reel. When we found Carp living in a short stretch of brackish creek, guess what reel I used? It has served well & never let me down. On a nice little 2/3 wt 6' Powell graphite rod I fish an old Lamson LP 1, nothing fancy, barely big enough to hold a DT2 & a little bit of backing, good enough for me.