As you have opted for the Losi 22 that cuts down the choice on servos as you'll need a low profile one.
I have
Savox 1257 x 2
Savox 1258 x 1
Orion VDS-1009 x 1
One thing with the savox servos is that they can draw a lot of power, so you can end up with brown outs on the Spektrum radios. So you need to look at a power cap for the reciever etc. That's why they aren't top of my list these days, good value yes, do the job yes, but at times would have choosen something else.
1251 from Savox - ok, nothing special, bit slow and have seen a number with stripped gears.
Orion VDS-1009 - very nice, but more expensive.
Spektrum
http://www.rccarshop.co.uk/index.php...w-profile.html
Sanwa -
http://www.rccarshop.co.uk/index.php...0kg-cm-6v.html
My choice
Orion
Spektrum
Savox
You'll also need to think about space in the car etc. and I'm not sure how big the spektrum RX is you'll get with that radio. Either way fitting kit into a 22 is a challenge lol
One thing you have missed off his a Personal Transponder - PT.
These come from AMB/My Laps or MRT. I use the My Laps PT and haven't missed any laps
AMB PT -
http://www.xtreme-rc.org.uk/catalog/...1f9a0a90f36e63
Don't forget to budget for tyres and wheels etc. Schumacher mini spikes for the dry (Yellow) and ballistic buggy greens for the wet as a general rule