Hi and welcome to P8nt..
Where abouts in the southeast are you marshalling ??
If i was starting out again and was looking at a cheap option and a sturdy option, i would most certainly be looking at these markers..
All of my choices belong to planet eclipse, this is because they make solid and very reliable markers..
ETEK1, a few years old now but there are some very good examples out there. £140 - £160
ETEK2, Once again just about to be replaced by the etek3.. £180 - £210
Both the above are easily upgraded with a Starframe giving you an OLED Screen read out for easier setting up ability.£90 - £100
Zick kit to cut out some of the kick. £20
Laser eyes, just to pick up the ball detection a little faster.. or just to look flash. £15
Cure bolts, well i cant say if they are really needed or just hype.. £20
If you dont want to upgrade with the extras but like the idea of having an OLED screen layout , buy one of the below..
EGO05, Great marker and to some of the best built.. £150 - £180
EGO06, £170 - £200
EGO07, This would be my personal choice, i loved the 07 and in the SL74 Version one of the best Planet Eclipse markers ever made £200 - £250.
Hope this of help to you, at the end of the day it depends on what you have to spend, but i would certainly say all very solid markers.
Carl