No I would not make that upgrade. I have heard both and the current La Scala (at two different dealers). The Cornwall iv and La Scala were in the same room with the same front end at both dealers.
The Cornwall IV has the potential to have harder hitting bass depending on the room. Get it just right (kind of close to the front wall) it hits harder. The Cornwall is a little softer in the bass on the leading edge but easier to place on the room and far less room dependent. If the bass is good with your fortes I would look at upgrading something else or saving and going for broke later lol. The mids seemed to spread out a little more on the Cornwall. Hard to say as they were in different rooms (heard them back to back though).
The La Scala is a different animal and could be a worse speaker without subs. They have NO bass extension and need subs. I heard them without subs and they sounded really thin and dry to me. I felt like I could hear the wood but that could be in my head. Sounds different than MDF. They have a very strong horn sound, Wide soundstage that maintains focus. Listen before you buy for sure. With the latest price hike they are getting up there.
The Cornwall IV has the potential to have harder hitting bass depending on the room. Get it just right (kind of close to the front wall) it hits harder. The Cornwall is a little softer in the bass on the leading edge but easier to place on the room and far less room dependent. If the bass is good with your fortes I would look at upgrading something else or saving and going for broke later lol. The mids seemed to spread out a little more on the Cornwall. Hard to say as they were in different rooms (heard them back to back though).
The La Scala is a different animal and could be a worse speaker without subs. They have NO bass extension and need subs. I heard them without subs and they sounded really thin and dry to me. I felt like I could hear the wood but that could be in my head. Sounds different than MDF. They have a very strong horn sound, Wide soundstage that maintains focus. Listen before you buy for sure. With the latest price hike they are getting up there.