Hi Hugo
I will give you this bit of advice based on a recent personal experience. Go to a good guitar store that has friendly and helpful staff and has a large selection of brands, tell them your price range ie. ÂŁ500 to ÂŁ1000 and the type of guitar, cut away or not, small, medium or jumbo, semi acoustic or not. Say you want to try up to 12 guitars that they would recommend for sound quality and nice to play, this may vary depending on your neck width preference based on hand anatomy. Also tell them to not tell you the price of each or their construction. Allow at least 2 to 3 hours doing this, if you feel rushed by them say so.
Start off with 3 in a private room if possible and just alternate between them until you have a preferred one for what whatever reasons, and put it to one side. If you have a friend that plays take them along and get them to play each, or ask the assistant to do so, with you about 10 feet away so you get to hear how each sounds, not just when you are playing it. Then get 2 or 3 more and repeat comparing with the original favourite, you may get to the point where you have 2 or 3 that you like best, which is good. At this point play chords, fingerpicking, solos and whatever you like doing on each and do the same on each, alternate and try and narrow it down until you find the one or two that suits you best.
IMHO it should feel great to play, comfortable in your lap when playing, also try with a strap, sounding good when you are playing or your friend is, and you like its overall tone/voice. What I mean by tone/voice is that some guitars have more bass lower end resonance and a warmer overall sound, whilst others can be more top endy, some can even sound bright. Construction and wood can and does effect this, but its not always as you expect. Also you may prefer a brighter sound if you are into finger picking and don’t want the low end overpowering it. Also ensure if semi-acoustic you play them all through a good acoustic amp with it set to a neutral balance, the SQ of the internal PZ mics and acoustic mics can make a big difference to how a guitar sounds.
My findings doing the above with 9 or 10 guitars was that I selected 2 semi-acoustics from 4 different well known brands that were very similar and had the same wood construction. At the end the assistant told me he knew half way through that I preferred a certain type of sound which certain woods and construction generally gave. One of the guitars I could have walked out with there and then, the other which was more expensive I was not so keen on how it sounded when played amplified. My guitarist friend pointed out it was all down to the quality of the PZ mic and could easily be changed to better one. I went away to save up and wait for another model I wanted to try to come in to compare.
I now have one of the original two I like. I deliberately have not clouded anything by talking about brands or what I end up with, allowing you go off with a clean slate so to speak.
Have fun trying them out, and good luck finding the one you like.