I was trying to make the same decision as you recently and I ended up with a Covert. And to be honest it ticks all the boxes for me. I’ve been to Afan and Aston Hill so far and it’s handled everything thrown at it. At Aston Hill I was going down the DH tracks and the bike was great, even if the rider was lacking skill and sliding out all over the place!
I didn’t want to spend too much but got a frame for £1000 from 2011. There are a few deals around. I think a large is available from Bikechase and there’s a second hand one on ebay at the moment in Large.
I almost went with the El Guapo but the Covert just pipped it. I also tried a Whyte 146 and an Stumpy Evo. The Whyte was fantastic but I wanted frame only and wasn’t too keen on getting Carbon. The Stumpjumper EVO was good as well and quietly got on with the job but just didn’t have the playful spark I wanted.