Not been on here in a while, I've got a stack of kits to get on with most of which were recommended to me.
My current list are -
Revell Mercedes C-Klass DTM G. Paffett (In progress)
Tamiya McLaren Mp4/4, MP4/5B, MP4/7, MP4/8 all in 1:20 scale with Photo Etched detail kits.
Tamiya McLaren MP4/6 in 1:12 scale, this can set you back a pretty figure though, mine cost £120, looks like a solid build though. Was looking into getting Perfect Parts kits, but when they (Brake and general kits) sold for £240 each on eBay, I decided to give it a miss....
Fujima McLaren MP4/5 Ayrton Senna Monaco GP edition in 1:20
And I do believe DeAgostini are about to annouce a 1:8 scale MP4/4 Senna Japan Version, currently trialling in Japan and if successful it will be released to us after the current MP4-23 model partwork finishes. (I think the understanding behind this is it will likely be the same price, so people are more likely to take out a new sub and carry on paying £32 a month, rather than sub to both whilst they overlap and pay £64 a month for a time...)
I'm still trying to prise info outta DeAgo but they are pretty tight lipped although I think this model will be a hit in Japan as they love Senna, so fingers crossed we will get it too!
Hope this helps....
If you want I can direct you to some good modelling forum websites which are great for tips and tricks.
Modelspace forum being one, myself and a couple of the guys on there are doing or planning to do a full rework of the MP4-23, warthog's diary is defo worth a read.