Depends in a way why you think you need new sails - or rather what is wrong with your current sails other than age. Genoas tend to lose performance because they stretch and fail to set well because they are baggy or have flapping leeches. This is caused by fabric aging and accentuated by use in heavy weather when the sail is reefed. Boats like yours with large overlapping genoas need reefing early, so typically spend more time sailing with rolls in the sail. Once the sail gets baggy it is difficult to get it flat enough for stronger winds and pointing suffers. Mainsails generally have an easier life, particularly fully battened as they hold their shape better as they age.
So, in a sense it depends on how you sail and what you hope to achieve for your hard earned money. I would guess where you currently sail you experience strongish winds (compared with, say, the Ionian). A sail that performs well in a wider range of winds up to 20+knots without reefing might be of benefit. This would lead to getting a smaller, say 115% genoa and sacrificing a bit of light air performance. You don't say if you have any offwind sails, but a trend now is to have a smaller genoa and rely on a cruising chute type sail for offwind up to say 15 knots where you would currently use a full genoa.. This is one route, but really you need to speak to 2 or 3 sailmakers, describe what you want the sail for and get recommendations. Don't be surprised if they disagree because that is the nature of a competitive market where there is a range of products that might suit!
For cloth, that is the major differentiator in price and there are essentially 3 levels of woven cloth plus laminates. Woven Dacron is the cheapest, but within that category there is a range of qualities and a range of manufacturers, but generally the more you pay the better the cloth in terms of stability and life. The next level up is Vectron type pioneered by Hood which incorporates vectran yarn for stability. The final type is Hydranet which incorporates Dyneema yarns and is commonly used for radial cut sails. Laminates are a whole new territory with many different types, mainly for racing, but spreading into cruising as they find ways of making them more durable and user friendly.
Which you choose, of course depends on such factors as your budget and how long you are going to keep the boat. Even the basic level sails such as you can buy on line from Far East lofts will be better than your current sails (which even though basic have still lasted well) and may suit if actual sailing performance is not a top priority. Paying more gets you hopefully a sail tailored to your needs that will last longer.
