Hope to Dive Into a DIY "Adventure" - Looking at Solar Force Combo or A Couple Tail Standing Versions: DROP- INS??

Hi Folks,

I'd like to try my hand at a DIY or 2 and I really want to start simply and slowly.

I saw this: http://www.solarforceflashlight-sales.com/product_detail.php?id=236&s=39&t=FB

but DIY Master "E" suggested the tailstanding versions:

http://www.solarforceflashlight-sales.com/product_detail.php?t=FB&s=42&id=300 and


Actually, he highly recommended the M version but that doesn't seem to be available anymore. I was warned to stay away from Solar Force Drop-Ins. So ... what's good that will fit? I'd really appreciate some advice since I have no idea what I'm doing.

Thanks in Advance and Regards, -Bob- (KumaBear)

P.S. Major Apologies if this has all been covered elsewhere but I'm totally new to the DIY scene.