Haven't owned a gelert but wouldn't recommend. You want to buy the best tent you can within your budget. You need to be safe,dry and comfortable if you have right tent for your needs it makes camping all the more enjoyable experience. Wind and rain are a big factor so read lots of reviews. Look at hydrostatic head ideally 3000 or higher, how it pitches whether inner and outer can be pitched as one or outer first handy when weather against you, I have an old Blacks vixen tent great wee tent but pitches inner first then flysheet ties on if its raining or windy time u get pitched inner is wet! Small porch area handy for wet gear and muddy boots.Midge nets on doors are fab! Would also recommend buying pegs that are suitable to ground you will be camping on, Glencoe laughs at the ones that come with tents
I always carry extra groundsheet gives a bit more protection from damp wet ground also ideal for packing tent back up on dryer surface, also gaffa tape is great cheap fix as a get you home if poles split or tent rips. Whatever tent you buy practice pitching at home, look at how it is packed as you unfold it easier when comes to packing back up, always dry tent after use and if stored for a while get tent out on decent day an air it. The right tent will last for years so will be money well spent. Shop around for the best price,stores like gooutdoors have tents up so you can crawl in and out and get an idea of what you do and don't like. Hope this is off help. Happy camping