I'm Shopping for a 3.5 to 4.5 cu inch saw

I'd like to know if anyone has a suggestion for a saw in the range of 3.5 to 4.5 cu inch.
Has anyone recently purchased a Dolmar 7300, 7400 7900 or Husky 372, 575 or 357?

[BostonBull]

Quite the variation of saws there, lets start with this. What will the saw be used for? What is the MAX size bar YOU will run on it? What is the closest and BEST dealer to you? What about Stihl?

[rbtree]

The Dolmar model numbers that are based on the same chassis are the 6400, 7300, and 7900. 64, 73, and 79 cc's......the 7900 is the most powerful of the saws you listed, and will easily pull a 32 inch bar. The 357 is great, powerful, and nimble, but is best run with a 20 inch bar. 372 is one of the best saws ever made. The 575 is a new generation, clean runniong saw that is heavier than its predecessors. Haven't run one, and doubt I will. Heard that a new 576 is in the pipeline, more pwr but still heavy.....

It's difficult to decide on a saw without trying it out first. Even though around here this is Stihl country I decided on Dolmar, 7300. I probably would have bought the 7900, but the dealer didn't have one on hand. I suppose Dolmar had me from the get go. The power to weight ratio was intriguing and I had to be different. I haven't cut any wood yet, just looking over the manual and the saw. I did run it at the dealer and at home in the garage. One interesting, or rather confusing, thing I found in the manual related to hand sharpening. I hope someone can explain to me. The manual talks about using two different sizes of files. Here is what it says:

Files and how to work with them
Sharpen using a special file holder with a saw chain round
file. Normal round files are not appropriate for this work. See
"Accessories" for the order number.
File the first cutter half with a 7/32" (5.5 mm) dia. round saw‑chain
file, then switch to a 3/16" (4.8 mm) dia. file.
The file should cut only when pushed forwards (arrow). Lift the
file when leading it backwards.
First sharpen the shortest cutter. The length of this cutter is then
the standerd for all other cutters of the chain.
New saw teeth must be filed to the exact same shape as the
used teeth, including on their running surfaces.
Always guide the file horizontally (10° to the guide bar).

So whats the deal here? Am I suppose to use two files to sharpen?