personally i use a merkur classic 45 when i dont have time to use the straight, also have merkur futur that i was given as a gift (not too fond of it) as far as DE's go i would start out with something fairly reasonable to start as ive found over the years with DE's the trick to getting a great shave with them is not all to do with the razor itself, but a combo of the right blades, right technique and the right prep.
why not look up:
-Gillette Tech
-Gillette Superspeed
-Merkur HD
-Merkur Classic or 1904
All good and quite reasonable