It would seem you are not confident in playing in public - like in shops. If you are a novice, take someone with you who is knowledgable (even if it is your teacher, and you have to pay him to do it) is the best advice. Often the best bargains are second-hand, but you do not have good safeguards if you do not know a good instrument from a bad one buying second hand, so if you are not helped in your choice it is safer to buy new. Two shops that are easy to recommend are Spectre guitars in Bingley and The Guitar Player in Rochdale, where knowledgable staff will let you play the boxes and help make your mind up. Music Ground in Doncaster is worth a look. Send me a PM and I'll help further.