For me I wanna enjoy the day and know that if I do get it a bit wrong I'm not gonna end up in a barrier or on the roof. I always look for tracks which ain't too tight and have plenty of run off. From chatting to a few people and YouTube vids I'd go for the following...
Blyton
Woodbridge (airfield so they just layout a track, not sure I'd fancy it myself but it meant to be great for a 1st go, when ever I look at the vids on YouTube I can never work out where the bloody track meant to go lol)
Snetterton.
Donnington
Croft.
Rockingham ( few peeps say its a engine blower tho)