I'm actually doing just the opposite myself. I'm going from an Alps 2300 to the Pearlabel 270. Having seen and talking to Ron I don't think the edges will be much different between the two IMO. The Alps waterslide may have a slight better edge, but the waterslide does have a faint whitish haze to it at certain angles, so what you gain in edges you give up in clarity.
Plus having owned my Alps 2300 for the past 8 years I will also tell you this. They are a tepermental pain in the ass. I've never had such a touchy printer as my Alps was. Sometimes it would come up "uninstalled" for no good reason, paper jams were common as could be even when there was no paper jam, issues with picking up the cartridges were common, and normally to get a decal with no visible lines through it I'd have to print four decals on two seperate lines on the paper. Then there's the fact that the thermal dry Alps like we use in rod building are not made any longer unless you spring for a $800-$1000 MD5000, so repair/replacement/support is non existant these days.
My honest opinion....stay with the Pearlabel 270, you will be far ahead in money, irritation, and IMO have better looking decals.
“If you say that getting the money is the most important thing, you'll spend your life completely wasting your time. You'll be doing things you don't like doing in order to go on living, that is to go on doing things you don't like doing, which is stupid. Better to have a short life, doing what you like doing, than a long life spent in a miserable way." - Alan Watts