Originally Posted by
OldStrummer
As usual, I don't have either amps from which to draw a comparison, but this guy does:
However, since I'm kind of in the "waiting for the water to boil" moment, I'll give you some of my own opinions, since I think our purposes and goals are similar.
I have a Fender Mustang IIv2. I also have a Fender Champion 40. Like the Mustang I and the Mustang LT25, they are very similar in size and capability. I have the Champ in my living room and the Mustang in my guitar room. I rarely play in my guitar room (it's more a storage area than a studio). It's been so long that I don't even remember why I chose one over the other. So, let's talk your two:
The Mustang I is old. It's so old it's not even on Fender's product list. The LT25 on the other hand, gets a lot of positive reviews -- for what it is. What it is, is a modeling amp with an 8" speaker and 20 amp models, 25 effects, USB connectivity, and an auxiliary input. That's quite a lot for an amp that costs less than $200!
(I chose my two amps because they are both 12" speakers, first and foremost). It's also a 25w amp, versus 40w for my two. Personally, that doesn't make a lot of difference to me; I also have a Monoprice 15w with a 1w switch, and even the single watt punches out sound in my living room. 40 watts is actually more than I need, since I never crank my sound up to annoy my neighbors (but I could!).
All things considered, if I were you, I'd be looking at the LT25. It's newer, which means more modern technology under the hood, as well as still being supported by Fender. If you're looking to play out, I'd probably be wanting a house PA and use the LT25 as a monitor, but since I don't play out except acoustically, that too, is a wash for me.
My $.02. I hope it's worth it. And the water is boiling.